192results about How to "Resistant" patented technology

This invention puts forward a method for encrypting double images based on fractional stage Fourier transformation, which disorders pixels of one of two original images, then carries out pure phase coding to the disordered result to multiply the other original image to generate a composite image with a duplicate swing and then makes fractional stage Fourier domain double random phase coding and encryption to get an encrypted image having generalized stable white noise approaching to gaussion distribution, which presents a method for reducing errors by threshold value by analyzing influence to decryption result by disturbance.

Lactobacillus rhamnosus and the use for it and its metabolin are disclosed. The strain is sieved and obtained from excrement of long-lived old. It's safe, has excellent antibacterial, acid-resisting and antioxidant performances. It can be used in dairy process and functional food production.

The invention provides a blower fan abnormal data processing method and device based on a quartile box plot. The method comprises steps that (1), blower fan data is read according to a certain format; (2), continuous repeated values of the blower fan data are eliminated; (3), blower fan power abnormal values are determined and processed through utilizing a quartile method; and (4), blower fan wind speed abnormal values are determined and processed through utilizing the quartile method. The method is advantaged in that different form a classic abnormal value identification method, drawing of the box plot is based on actual data, assuming data to be in a specific distribution form in advance is not needed, not any restrictive requirements are made for the data, original appearance of the data shape is simply, truly and visually presented, on the other hand, abnormal value determination standards of the box plot are based on a quartile number and a quartile range, the quartile number has certain resistance effects, up to 25% data can be any far on the condition that the quartile number is not greatly disturbed, so abnormal values have no influence on the standards, and thereby an abnormal value identification result through the box plot is relatively objective.

The invention relates to an oxidative hair dye composition for keratin fibers, comprising fatty component, thickener and dye precursor. Provided is a ready-to-use composition for the oxidation dyeing of keratin fibers, and for example of human keratin fibers such as the hair, comprising, A) at least one fatty substance other than fatty acids present in the ready-to-use composition in an amount ofgreater than or equal to 25% by weight relative to the total weight of the ready-to-use composition, B) at least one polymeric thickener, C) at least one dye precursor, D) at least one oxidizing agent and E) at least one alkaline agent wherein at least one of the at least one alkaline agent is an organic amine. The inventive composition is characterized by the improved dying performance.

The invention relates to deep processing of sea cucumbers, in particular to a method for preparing sea cucumber collagen small peptide freeze drying powder extracted from sea cucumber decoction liquor. The method adopts the sea cucumber decoction liquor as the raw material and comprises the steps of A. obtaining the sea cucumber decoction liquor; B. enzymatic hydrolysis; C. purification of sea cucumber collagen small peptide; and D. freeze-drying, drying and product packaging. The method can increase the processing rate and nutritional value of sea cucumbers, and by adopting FD space biological freezing and drying technology, the activity, oxidation resistance, re-polymerization resistance and moisture binding resistance of the sea cucumber collagen small peptide can be kept, and the sea cucumber collagen small peptide can be stored easily due to less moisture.

The invention discloses a ceramic dielectric material matched with a nickel inner electrode and a production method of a capacitor produced by the ceramic dielectric material. The ceramic dielectric material consists of a main crystal phase, a property-modifying additive and a sintered fluxing agent, wherein the main crystal phase is MgZrxSi(1-x)O3, and x is more than or equal to 0.05 and less than or equal to 0.15; the property-modifying additive is one or more of MnO2, Al2O3, CaO, Bi2O3 and TiO2; and the sintered fluxing agent is one or more of B2O3, SiO2, ZnO, Li2O, K2O and BaO. The ceramic dielectric material can meet the COG characteristic in the EIA standard, has good uniformity, uniform particle size distribution, high dispersibility, good molding technique and excellent dielectricproperty and meets the environmental requirement. When the material is used for making a multi-layer chip ceramic capacitor (MLCC), the material and the nickel electrode can be matched and sintered under the reducing atmosphere, the crystal particles of a ceramic body after sintering can grow uniformly and densely, the dielectric layer can be well matched with the inner electrode, and the productperformance is stable.

The invention relates to an anti-infection bio-derived hernia and body wall repair material, a preparation and an application thereof, the repair material comprises a small intestinal submucosal acellular matrix (SIS) with the thickness of 80mu m-100mu m and nano-silver particles which are implanted in the SIS. The preparation method comprises the steps of preparing the nano-silver particles into working solution with the concentration of 50ppm-500ppm, carrying out flat immersion into the SIS under the conditions that the volume ratio of working solution / SIS is 100-120:1, the temperature is 37 DEG C and the CO2 concentration is 5% and turning over the SIS at 1 time / 30 minutes, thereby obtaining the nano-silver SIS. The repair material has the advantages of safety, no toxicity, anti-infection property, high tissue affinity, absorbability, rapid tissue regeneration, light adhesion, low hernia recurrence rate and the like, the anti-infection property is characterized by high efficiency, durability, broad antibacterial spectrum, no drug resistance and the like, and the composite material can be applied in repair of body wall wounds, fascial defects or hernia accompanied with contamination or infection.

The invention belongs to the technical field of feed, and particularly relates to compound feed for improving the production performance of laying hen and the egg quality. The compound feed consists of corn, lard oil, soybean meal, rape seed cake, peanut meal, gunite bran, mountain flour, calcium hydrophosphate, lysine, methionine, liquid phytase, liquid xylanase and premix. The compound feed provided by the invention can obviously improve the production performance of laying hen and improve the laying rate and the egg quality, and can increase the weight of a single egg and reduce the damage rate of eggs; and moreover, after being eaten by the laying hen, the compound feed can promote digestive absorption, improve the feed conversion rate and the feed-gain ratio, and increase the economic benefits of laying hen farming.

The invention relates to a fertilizer for promoting growth of tea leaves and a preparation method thereof. The fertilizer is characterized by being prepared from the following raw materials in parts by weight: 6-8 parts of oilseed rape cake dregs, 4-6 parts of soybean cake dregs, 10-12 parts of walnut shells, 6-8 parts of cottonseed cake dregs, 4-6 parts of tea tree branch powder, 3-4 parts of soybeans, 4-7 parts of corns, 9-11 parts of alfalfa meal, 1-2 parts of sodium selenite, 1-2 parts of zinc sulfate, 1-2 parts of ferric sulfate, 6-8 parts of foot oil, 4-6 parts of bamboo charcoal powder, 3-5 parts of diatomite, a proper amount of EM (Effective Microorganisms) fungicides, 15-20 parts of a soil conditioner and a proper amount of water. The fertilizer disclosed by the invention is rich in various nourishments such as organic fertilizers and inorganic fertilizers, has no toxicity, side effect, residue, drug resistance and cannot pollute the environment. According to the fertilizer, the growth of tea leaves is promoted, the nourishments required by the tea leaves can be obviously supplemented, the quality of the tea leaves is improved, the contents of beneficial substances of a human body are increased, and the soil can be improved.

The invention discloses a calculating method for three-dimension scanning point cloud real-time normal vectors. The method includes the steps that (1) a kinect camera is used for performing real object scanning to read point cloud data, and a KD tree is used for searching for neighborhood points among points in point cloud; (2) according to a principal component analysis (PCA), the searched neighborhood points are subjected to fitting to form a plane, and normal vectors of the fitting plane serve as the normal vectors of all points of the point cloud data; (3) normal vector weighted mean of a neighborhood point of each data point of the point cloud data within radius r can be figured out through a weighted mean algorithm; (4) normal vector evaluation confidence coefficient of each point is set, and the evaluation is performed by means of the normal vector weighted mean of each neighborhood point of each data point of the step (3); (5) a threshold value a of the normal vector confidence coefficient of each point is set, the normal vector confidence coefficient of each point is judged, and the normal vectors of the points are corrected. By means of the calculating method for the three-dimension scanning point cloud real-time normal vectors, overhead time of calculation of point cloud data normal vector estimation can be reduced, the correction function on the normal vectors of the points can be achieved, reorientation calculation of the point cloud normal vectors can be avoided, and the calculating complexity is reduced.

A catheter for blood removal that is to be provided in the coronary sinus via the inferior vena cava to remove the blood in the coronary sinus from the body wherein: the catheter for blood removal has a straight back end shaft, a curved front end shaft connected in the front end side of the back end shaft, a hub connected in the back end side of the back end shaft and a blood removal lumen extending from the back end of the catheter for blood removal to the front end thereof; the front end shaft comprises a first straight part, a first curve part following the first straight part, a second curve part following the first curve part, a second straight part following the second curve part, a third curve part following the second straight part and a third curve part following the third straight part.

An application method for Chinese herbal medicines during the perinatal period of a dairy cow relates to the field of feed methods for the dairy cow during the perinatal period. The application method is characterized in that the application method comprises the following steps: crushing rhizome of large-headed atractylodes, milkvetch root, Chinese angelica, herba leonuri, cowherb seed, prepared rehmannia root, beautiful sweetgum fruit, rheum officinale, vegetable sponge and liquorice root and mixing; adding the crushed and mixed Chinese herbal medicines in diet of the dairy cow in antenatal 15 days and postpartum 4-15 days; uniformly stirring; and mixing and decocting the crushed and mixed Chinese herbal medicines with water to obtain Chinese herbal soup and enabling the dairy cow in postpartum 1-3 days to drink the decocted Chinese herbal soup for three times each day, with 1000 ml each time. According to the application method disclosed by the invention, the Chinese herbal medicines are used for feeding the dairy cow during the perinatal period, have the characteristics of greenness, no residue or side effect or drug resistance and the double efficacies of nutrition and medicinal use and can be used for improving the constitution of the dairy cow, conditioning the mechanism change in the dairy cow, reducing the morbidity and enhancing the metabolic activity of mammary gland, and thus the milk yield of the dairy cow per unit is increased and the milk is abundant in nutrition and high in quality.

The invention discloses a carrier attitude and heading calculation method assisted by a geomagnetic field model and a system. The method comprises the following steps that an ideal magnetic inclination angle is calculated according to position information of a carrier and the geomagnetic field model; an estimated magnetic inclination angle is calculated according to an output value of an accelerometer and an output value of a magnetic sensor; whether environmental magnetic interference exists or not is judged according to the ideal magnetic inclination angle and the estimated magnetic inclination angle; if the environmental magnetic interference exists, an equivalent weight matrix of magnetic sensor measurement values is constructed according to self-adaptive weights of the magnetic sensor measurement values; carrier attitude information and heading information are calculated according to an accelerometer measurement value, the magnetic sensor measurement values and the equivalent weight matrix of the magnetic sensor measurement values. According to the carrier attitude and heading calculation method assisted by the geomagnetic field model and the system, the environmental magnetic interference is detected according to the ideal magnetic inclination angle and the estimated magnetic inclination angle, when the environmental magnetic interference is detected, the equivalent weight matrix of the magnetic sensor measurement values is constructed, self-adaptive adjustment of contribution of the magnetic sensor measurement values to a state estimation value is achieved, and the calculated attitude information and heading information have robustness.

The invention relates to an oligosaccharide metallic compound. The compound is characterized in that sugar residues of the compound consist of alpha-1, 4-L-guluronic acid; the weight average molecular weight of the compound is less than or equal to 12kD; and a molecular general formula of the compound is (C6H7O6)nCrm, wherein n is equal to 1 to 54, m is equal to 1 to 27 and the mass percentage of trivalent chromium is 0.1 to 12 percent. The preparation of the compound comprises the following steps: slowly adding chromic salt and dilute alkaline aqueous solutions in oligoguluronic acid aqueous solution under the conditions that pH is equal to 5 to 10 and temperature is between 40 and 80 DEG C; after stopping adding dilute alkaline and chromic salt aqueous solutions, carrying out heat-insulation reaction for 1 to 3h; carrying out filtration and precipitating the filtrate by ethanol with the volume 3 to 5 times that of the filtrate; carrying out static, precipitation and centrifugation; and collecting and washing the precipitate by using anhydrous ethanol to obtain the compound after drying. The oligosaccharide metallic compound has the advantages that because the raw materials are derived from marine natural products, the compound has abundant resources, easy industrialization, high safety, unique structure and ideal oral absorption and particularly integrates the advantages of marine oligosaccharide and trivalent chromium; and the compound not only has the functions of preventing insulin resistance and adjusting sugar and fat metabolism disturbance, but also has broad market and application prospects particularly in the prevention and treatment of diabetes II.

The invention provides a compound Chinese medicinal herb extract for preventing and treating livestock and poultry diarrhea and a preparation method thereof. The extract is made from paulownia flower, purslane, ciderage, geranium, garden burnet root, copperleaf and cactus, the raw medicinal materials comprise parts as follows by weight: 29-35 parts of the paulownia flower, 22-28 parts of the purslane, 20-26 parts of the ciderage, 17-23 parts of the geranium, 17-23 parts of the garden burnet, 13-17 parts of the copperleaf and 8-12 parts of the cactus. The preparation process of the compound Chinese medicinal herb extract comprises the following steps: selection of the raw medicinal materials, washing, herb cutting, primary aqueous extraction, secondary aqueous extraction, decoction combination, condensing, filling and packaging. The compound Chinese medicinal herb extract preparation for preventing and treating the livestock and poultry diarrhea has the efficacies on eliminating dampness and stopping diarrhea, and mainly treating diarrhea and enteritis, and has the advantages of naturalness, no residue, no drug tolerance and the like.

A semiconductor device production method including, in order: a first step in which a semiconductor element having a pn junction-exposed section is prepared; a second step in which an insulation layer is formed so as to cover the pn junction-exposed section; and a third step in which a layer comprising a glass composition for semiconductor junction protection is formed upon the insulation layer, and then a glass layer is formed upon the insulation layer by sintering the layer comprising the glass composition for semiconductor junction protection. The glass composition for semiconductor junction protection comprises glass fine particles prepared from a melt obtained by melting a raw material containing at least two alkali earth metal oxides from among at least SiO2, Al2O3, B2O3, ZnO, CaO, MgO, and BaO, and not substantially containing Pb, As, Sb, Li, Na, or K. In addition none of the raw material components are included as fillers. As a result, a semiconductor device having high pressure resistance similar to conventional semiconductor devices can be obtained using a glass material not including lead.

The invention discloses a nanometer Ag antimicrobial comprising nanometer Ag particle, a solubilizer, a water-soluble polymer, a plasticizer, a processing modifier, a solvent, a film-forming assistant, essence, pigment, distilled water or deionized water. The invention also disclosed a preparation method of the nanometer Ag antimicrobial. The preparation method comprises the steps of: adding the nanometer Ag particle into the distilled water or the deionized water, adding the solubilizer and the water-soluble polymer, and stirring to prepare a solution A; adding the plasticizer and the processing modifier (acrylate (ACR)) into the solvent, stirring, adding the film-forming assistant, and stirring to prepare a solution B; and adding the solution A into the solution B, adding the essence and the pigment, and stirring to obtain the nanometer Ag antimicrobial. The nanometer Ag antimicrobial disclosed by the invention has the advantages of strong adhesion on objects, good film forming property, good friction resistance and long-lasting antibacterial effect; and the preparation method has the advantages of simpleness and strong operability.

The invention discloses an attitude and heading calculation method and system assisted by carrier movement state information. The method comprises the following steps that the movement state information of a carrier is obtained according to an output value of an accelerometer and an output value of a gyroscope; whether environmental magnetic disturbance exists or not is judged according to the movement state information of the carrier; if yes, an equivalent weight matrix of a magnetic sensor measurement value is created according to a self-adaptive weight of the magnetic sensor measurement value; carrier attitude information and heading information are calculated according to an accelerometer measurement value, the magnetic sensor measurement value and the equivalent weight matrix of the magnetic sensor measurement value. According to the attitude and heading calculation method and system assisted by the carrier movement state information, the environmental magnetic disturbance is detected according to the movement state information of the carrier, when the environmental magnetic disturbance is detected, the equivalent weight matrix of the magnetic sensor measurement value is created, self-adaptive adjustment, contributed by the magnetic sensor measurement value, on a state estimated value is achieved, and the attitude information and the heading information obtained through calculation have robustness.

The invention relates to a site installation and debugging method of an adjustable bridge steel support, which solves the problems of danger brought by bridge foundation descent and poor tensile property and complex height-adjusting process of the bridge support. The method comprises the following steps of: accurately measuring the on-line height of the support by using a height measuring device; selecting the off-line presetting of the adjustable bridge steel support to set the height of the support according to the measured height; making an upper support plate of the steel support meet the requirements of engineering design by means of an adjustable stepless height-adjusting mechanism of the steel support; after installing the bridge, laying a railway track and loading actual measurements, making the upper support plate of the steel support meet the dynamic requirements of engineering design by means of the adjustable mechanism of the steel support; and adjustably positioning the steel support by means of a locking mechanism. The invention also relates to an adjustable curved steel support matched with the method. The invention has simple method, easy implementation and stepless height-adjusting function, the transmission force of height adjustment is relatively smooth and steady, and large loads or vibration can be supported.

The invention discloses a kit for detecting helicobacter pylori drug resistance gene polymorphism by a multiplex fluorescence PCR melting curve method. The helicobacter pylori drug resistance gene comprises the following three genes: a 23S rRNA gene, a 16S rRNA gene and a gyr A gene, the kit comprises a nucleic acid extraction reagent and a nucleic acid amplification reagent, the nucleic acid extraction reagent comprises superparamagnetic silicon oxide nano magnetic beads, a lysis solution, a washing solution and an eluent; the nucleic acid amplification reagent comprises a primer pair and a probe which respectively correspond to the helicobacter pylori drug resistance gene 23S rRNA gene, the helicobacter pylori 16S rRNA gene, the gyr A gene and an internal standard gene human housekeepinggene beta-globin. According to the invention, three drug-resistant sites and one internal standard gene can be simultaneously detected in a single tube, so that the detection flux of a sample is improved; meanwhile, interference between multiple pairs of primer probes in a detection system is improved, and the sensitivity and specificity of reagent detection are effectively improved.

The invention discloses a fertilizer for promoting tea to grow and a preparation method of the fertilizer. The fertilizer is characterized by comprising the following raw materials in parts by weight: 6-8 parts of rapeseed cake meal, 4-6 parts of soybean cake meal, 10-12 parts of walnut shell, 6-8 parts of cotton seed cake meal, 4-6 parts of tea tree branch power, 3-4 parts of soybean, 4-7 parts of maize, 9-11 parts of alfalfa power, 1-2 parts of selenite, 1-2 parts of zinc sulfate, 1-2 parts of ferrum sulfite, 6-8 parts of oil slag, 4-6 parts of bamboo charcoal power, 3-5 parts of diatomite, right parts of EM bacterial agent, 15-20 parts of soil conditioner and an appropriate amount of water. The fertilizer disclosed by the invention is rich in organic fertilizers, inorganic fertilizers and various kinds of nourishment, is innocuous, has no side effects, residue and drug resistance, does not pollute the environment, facilitates the growth of tea, can remarkably supplement required nutritious components, improves the quality of tea, increases the content of substances in tea, which are beneficial to human bodies, and improves the soil.

The invention discloses an application method of immobilized microorganisms in livestock breeding wastewater treatment. The technical flow comprises the following steps: (1) preparation of microbial fermentation broth; (2) preparation of the immobilized microorganisms; (3) induced culture of the immobilized microorganisms; (4) habituated culture; and (5) breeding wastewater treatment. According tothe invention, various microorganism symbiotic systems are constructed, and microorganisms can cooperate to effectively degrade organic substances, nitrogen, phosphorus and heavy metal pollutants inthe livestock breeding wastewater; a composite embedding material is adopted to immobilize the microorganisms, and a unique micro environment is formed to have a good shielding effect on outside invasion; resistance and tolerance of the immobilized microorganisms on the breeding wastewater are further improved through induced culture and habituated culture; and when the immobilized microorganismsare applied to a wastewater treatment system, stability is relatively high within a service period, and a good degradation effect is achieved on the livestock breeding wastewater, and therefore, a foundation is laid for practical application of the immobilized microorganisms in wastewater treatment.

The invention relates to a terahertz image enhancing method and system. The method comprises steps as follows: median filtering and noise reduction, non-local filtering, frequency-domain high-pass filtering, edge processing and overlapping processing are performed on a terahertz image, the adopted non-local filtering is different from domain filtering adopted in some methods, speckle noises can be filtered out to a certain extent through domain filtering, but edge information is more fuzzy, the non-local filtering is more resistant to the noises, and the filtered-out part comprises little geometrical structure information.

The invention relates to a rubber fastener for an automobile air conditioner pipe. The rubber fastener comprises a fastener main body and a fastening component, wherein the fastener main body consists of ethylene-propylene-diene-terpolymer rubber, phenolic resin, zinc oxide, stearic acid, fast extruding furnace black N550, paraffin oil, calcium carbonate, polyethylene glycol, paraffin, an aid Aflux42, an aid HMMM (Hexakis (methoxymethyl) melamine), calcium oxide, an accelerant ZDBC, an accelerant TMTD, an accelerant TDEC and sulfur; the fastening component consists of ethylene-propylene-diene-terpolymer rubber, zinc oxide, stearic acid, fast extruding furnace black N550, super-fine calcium carbonate, paraffin oil, calcium oxide, an accelerant EZ, an accelerant CZ, an accelerant Na-22, an accelerant TMTD, an accelerant TDEDC and sulfur. Each part is moderate in hardness, very high in cold resistance, tensile strength and the like and excellent in bonding performance, the situations of cracking, facture and the like are avoided, the service life of a product is prolonged, and the cost is reduced.

The invention provides a method for preparing a feed additive by effective microbial community fermented Chinese herbal medicament to prevent and control porcine infectious diseases. The Chinese herbal medicament comprises astragalus mongholicus, indigowoad leaf, golden cypress, honeysuckle, fructus forsythiae, mulberry leaf, chrysanthemum Hangzhou flower, platycodon grandiflorum, great burdock achene, bamboo leaf, reed rhizome, mint, liquorice and medicated leaven. The preparation method comprises the following steps of: crushing, immersing, heating and insulating the Chinese herbal medicaments, fermenting with probiotics to obtain the Chinese herbal medicinal active fermentation broth for preventing and controlling porcine infectious diseases, wherein the probiotics used in the fermenting process are mainly saccharomycetes, lactic acid bacteria, bifidobacterium, photosynthetic bacteria, bacillus and the like. The Chinese herbal medicinal active fermentation broth has the functions of preventing and controlling porcine infectious diseases, promoting growth, reinforcing immunity, and changing porcine intestinal flora, is easy to use and has the advantages of less dosage of Chinese herbal medicament, high viable organism content, no residue, no drug resistance and the like.

The invention relates to a production system for hollow alginate capsules for cigarettes. The production system comprises an emulsifying tank for preparing an emulsion, a forming device for preparing the emulsion into emulsion drops in a dropwise adding manner, and enabling the emulsion drops to contact a forming liquid, and to be condensed to form alginate capsule primary pills, a film forming device for soaking the alginate capsule primary pills in the forming liquid for first preset time, a first water washing device or washing the alginate capsule primary pills after being soaked for the first preset time, a curing device for enabling the washed alginate capsule primary pills to contact a fixing liquid for second preset time, a second water washing device for washing the cured alginate capsules, and a PLC (programmable logic controller) for setting the first preset time and the second preset time, controlling the alginate capsule primary pills to be soaked in the forming liquid for the first preset time, and controlling the alginate capsule primary pills to contact the curing liquid for the second preset time. The production system can be used for producing the alginate capsules with the radial dimension being 2.5mm-4.0mm.

The invention relates to a terahertz image processing method and system. The processing method comprises the following steps: conducting median filtering on a terahertz image for noise reduction; conducting nonlocal filtering, frequency domain high-pass filtering, edge processing and superposition processing, wherein the nonlocal filtering adopted is different from domain filtering adopted in certain methods, the nonlocal filtering has better resistance against noise, and the part filtered out contains less geometrical structural information; while domain filtering can filter out speckle noise to a certain degree, edge information is more obscure.

The invention discloses a multilayer clip ceramic capacitor dielectric material and a capacitor thereof. The multilayer clip ceramic capacitor dielectric material consists of a main crystalline phase, a modified aid and a glass aid, wherein the main crystalline phase is (CaxSr(1-x))m(TiyZr(1-y))O3, x is more than or equal to 0.6 and is less than or equal to 0.8, y is more than or equal to 0.01 and is less than or equal to 0.1, and m is more than or equal to 1.000 and is less than or equal to 1.008; the modified aid is one or two of Bi2O3 and MnCO3; and the glass aid is one or more of Li2O, B2O3, Al2O3, ZnO and SiO2. When the multilayer clip ceramic capacitor is made of the material, the material can be matched with a copper electrode, so the material has the high-frequency and high Q electrical performance.

A composite vegetative liquid extract for preventing fowls' influenza is prepared from 10 plants including honeysuckle flower, wild chrysanthemum flower, albizia flower, pueraria flower, etc through extracting, concentrating and packing.

The invention belongs to the technical field of quantum communication, and discloses a semi-quantum group signature method and system based on quantum walk, and the method comprises the steps: carrying out the group internal communication through employing a semi-quantum communication mode; using a quantum walking-based mode to carry out communication outside a group, entangled particles being automatically generated in a walking process, and transmitting a communication message by adopting a quantum walking-based invisible transmission state; when the distributed information is signed by group members, performing blind processing on the message by using a certain coding rule, so that the blind information is not acquired by other group members and external potential attackers; and carrying out anti-repudiation, anti-denial, anti-forgery, interception retransmission attack and entanglement attack security analysis on the blind information. According to the method, single-photon-based information transmission is adopted for communication in the group, so that quantum preparation and detection are relatively easy, and the communication cost is greatly saved in the actual applicationprocess.