Foot bath health-care powder and preparation method thereof
Through the combination of 22 Chinese medicinal materials and standardized preparation technology, the problems of single formula and safety of existing foot bath products have been solved, and multi-dimensional health effects and safe adaptability have been achieved. It is a foot bath product suitable for families and health institutions.
Patent Information
- Application Number
- CN202511050928.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-29
- Publication Date
- 2025-09-05
AI Technical Summary
Existing foot bath products have a single formula and lack comprehensive consideration of qi and blood regulation and organ coordination. They are difficult to adapt to complex physiques. There is no standardized process for crushing and mixing Chinese medicinal materials, the effective ingredients are easily lost, and the safety adaptability is poor. There are no flexible usage plans designed for different scenarios, which affects the health effects and safety.
It uses a combination of 22 Chinese medicinal materials such as Pueraria lobata and Ephedra sinica, and goes through a standardized process of screening, mixing, drying, crushing and packaging to ensure the cleanliness of the raw materials and the retention of effective ingredients. The particle size is 100-120 mesh, and the heavy metal and microbial indicators are strictly limited. It provides multi-dimensional effects such as dispelling exterior pathogens, clearing heat, replenishing Qi, and promoting blood circulation. It is suitable for people with cold and damp constitution and insufficient Qi and blood.
It achieves multi-dimensional foot-nourishing and body-conditioning effects, improves the safety and user experience of foot bath products, adapts to the needs of different scenarios, ensures the stability of effective ingredients and transdermal absorption efficiency, and is suitable for families and health institutions.
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Figure CN120586006A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the field of foot bath health care, in particular to foot bath health care powder and a preparation method thereof. Background Art
[0002] In the field of health preservation, foot bath, as a traditional Chinese medicine external treatment method, relies on the theory of "the connection between foot meridians and internal organs" to achieve health conditioning through foot soaking; existing technologies cover foot bath products (such as foot bath powder, foot bath liquid) and supporting usage methods. The core is to use Chinese medicinal materials or chemical preparations, which act on the skin and acupuncture points of the feet after dissolution to achieve single or compound effects such as dispelling cold, activating blood circulation, and unblocking meridians. Its technical path focuses on ingredient screening (mostly using common cold-relieving and blood-activating medicinal materials) and simple processing (crushing and mixing) to provide consumers with home health care options.
[0003] However, the formulas of existing foot bath technologies have limitations. Most products focus on a single effect (such as simply dispelling cold or promoting blood circulation), lack comprehensive consideration of "Qi and blood conditioning, and viscera coordination", and are difficult to adapt to the diverse needs of people with complex constitutions (such as people with cold and dampness and insufficient Qi and blood), and the health-preserving effect is one-sided; and the preparation of existing formulas is extensive, and there is no standardized process for crushing and mixing Chinese medicinal materials. Active ingredients (such as puerarin and volatile oils) are easily lost due to high temperature and excessive crushing, and the finished product particle size is uneven, dissolving slowly during foot bathing, and impurities precipitate, affecting the experience and absorption of medicinal effects; thirdly, safety and adaptability are poor, and some products do not strictly limit the quality of raw materials (such as pesticide residues and heavy metals exceeding the standard in Chinese medicinal materials) and microbial indicators, posing health risks. At the same time, flexible usage plans are not designed for different scenarios (home, institution), and there is an imbalance between versatility and precision. These problems make it difficult for existing foot bath technology to meet consumers' needs for "scientific, efficient, and safe" health care, and innovation and breakthroughs are urgently needed. Summary of the Invention
[0004] In order to solve the above technical problems, the present invention provides a foot bath health care powder and a preparation method thereof, so as to solve the problems of single formula and extensive preparation of foot bath products in the prior art.
[0005] The foot bath health care powder is made from the following raw materials in parts by weight: 26 parts of purple kudzu root, 18 parts of ephedra, 22 parts of cinnamon tip, 13 parts of raw white peony root, 9 parts of liquorice, 9 parts of Sichuan pepper, 13 parts of fennel, 13 parts of stephania tetrandra, 26 parts of raw gypsum, 21 parts of siler, 20 parts of codonopsis pilosula, 22 parts of raw rehmannia, 7 parts of angelica, 13 parts of ligusticum, 9 parts of oriental water plantain, 17 parts of dried tangerine peel, 15 parts of raw atractylodes, 10 parts of pinellia ternata, 10 parts of scutellaria baicalensis, 5 parts of peach kernel, 13 parts of dried ginger, and 20 parts of poria.
[0006] Medicinal effects of Pueraria lobata: It is cool in nature, sweet and spicy in taste, and has the effects of relieving muscles and reducing fever, promoting fluid production and quenching thirst, and promoting blood circulation in the feet and relieving muscle tension; it improves foot microcirculation through transdermal absorption, creates conditions for the penetration of other medicinal ingredients, and assists in regulating metabolism in the body.
[0007] The medicinal effects of ephedra: warm in nature, pungent and slightly bitter in taste, it can relieve exterior symptoms, dispel cold, open up the lungs and relieve asthma. Its volatile oil components can stimulate the dilation of blood vessels in the skin and enhance the local sense of warmth; it can open the pores of the feet and promote the discharge of cold air. Combined with cinnamon tip and saposhnikovia divaricata, it can enhance the effect of dispelling cold and is suitable for people with cold and damp constitution.
[0008] Medicinal effects of cinnamon tip: It is very hot in nature, pungent and sweet in taste, warms the middle and dispels cold, promotes blood circulation and dredges the meridians, can warm the meridians of the feet and relieve cold limbs; it works synergistically with ephedra to enhance the effect of dispelling cold and dredging the meridians, and improve numbness, soreness and swelling of the feet caused by cold and blood stasis.
[0009] Medicinal effects of raw white peony: slightly cold in nature, sweet and sour in taste, nourishes blood and regulates menstruation, softens the liver and relieves pain, can relieve foot muscle spasms, and harmonize qi and blood; balances the warming nature of ephedra and cinnamon tip, avoids excessive dispersion, and improves foot skin nutrition by nourishing blood.
[0010] The medicinal effects of licorice: It is mild in nature, sweet in taste, and can nourish the spleen and replenish qi, clear away heat and detoxify, and harmonize various medicines. It can relieve the irritation of other medicinal materials and enhance the stability of the formula; as a "medicine guide", it harmonizes the nature and flavor of 22 medicinal materials, reduces the dryness of ephedra and Sichuan pepper, and at the same time improves the overall safety of the formula.
[0011] The medicinal effects of Sichuan pepper are: hot in nature, spicy in taste, warming the middle and relieving pain, killing insects and relieving itching. Its spicy ingredients can stimulate the acupuncture points on the feet and enhance the conduction of meridians; it assists cinnamon tip and dried ginger to enhance the effect of dispelling cold, while inhibiting the growth of bacteria on the feet and preventing local infection during foot bathing.
[0012] Medicinal effects of fennel: warm in nature, spicy in taste, can dispel cold and relieve pain, regulate qi and stomach, and can regulate spleen and stomach function through the foot meridians; for spleen and stomach weakness caused by cold and dampness, it can indirectly improve digestive function through foot bath, and relieve symptoms such as abdominal distension and chills.
[0013] Medicinal effects of Stephania tetrandra: It is cold in nature, bitter and pungent in taste, and can dispel wind and relieve pain, promote diuresis and reduce swelling. It can relieve swelling and pain caused by damp heat in the feet; balance the dryness of the warm and hot herbs in the formula, while promoting the metabolism of excess water in the feet and reducing edema.
[0014] Medicinal effects of gypsum: It is cold in nature, sweet and spicy in taste, clears away heat and purges fire, relieves restlessness and quenches thirst, can clear away stagnant heat in the feet, and relieve skin discomfort caused by dryness and heat; it neutralizes the warming nature of ephedra and cinnamon tip, and avoids excessive sweating, thirst and other discomforts caused by dryness and heat during foot bath.
[0015] Medicinal effects of Saposhnikovia divaricata: It works synergistically with ephedra to enhance the antipyretic effect, and at the same time relieves the stiffness and pain of the foot joints caused by wind, cold and dampness; it works synergistically with ephedra to enhance the antipyretic effect, and at the same time relieves the stiffness and pain of the foot joints caused by wind, cold and dampness.
[0016] Medicinal effects of Codonopsis pilosula: It is mild in nature, sweet in taste, and can replenish qi, nourish blood and produce body fluid. It can nourish qi and blood through the meridians of the feet and enhance physical fitness. For people with insufficient qi and blood, it can enhance the "nourishing" effect of foot bath and relieve symptoms such as fatigue and weakness.
[0017] Medicinal effects of Rehmannia root: It is cold in nature, sweet in taste, clears away heat and cools blood, nourishes yin and produces body fluid, nourishes the skin of the feet, improves dryness and peeling caused by dryness and heat; balances the cold nature of gypsum, and at the same time relieves yin deficiency and dryness and heat that may occur after foot bath through its yin-nourishing effect.
[0018] Medicinal effects of angelica: warm in nature, sweet and spicy in taste, it can replenish blood, promote blood circulation, regulate menstruation and relieve pain, and provide "blood nourishing" power for the foot meridians; it works synergistically with Chuanxiong and peach kernel to improve foot microcirculation and relieve numbness of hands and feet and pale skin color caused by blood deficiency.
[0019] Medicinal effects of Chuanxiong: warm in nature, pungent in taste, enters the liver, gallbladder and pericardium meridians, and has the core effects of promoting blood circulation, promoting qi, dispelling wind and relieving pain; it can not only promote blood circulation and remove blood stasis to unclog blood vessels, but also promote qi and relieve depression to disperse blood stasis, and at the same time dispel wind and dredge meridians to relieve pain.
[0020] Medicinal effects of Alisma: It is cold in nature, sweet and light in taste, and can promote diuresis, eliminate dampness and relieve heat. It can promote the discharge of excess water from the feet and reduce swelling. It is combined with Stephania tetrandra to enhance the diuretic effect. At the same time, it balances the warm and hot ingredients in the formula through the heat-relieving effect to avoid dampness and heat accumulation.
[0021] The medicinal effects of dried tangerine peel: warm in nature, pungent and bitter in taste, it can regulate qi and strengthen the spleen, dry dampness and resolve phlegm, and can regulate the qi of the spleen and stomach through the foot meridians; it can assist fennel in improving spleen and stomach function, relieve abdominal distension and indigestion caused by cold and dampness, and enhance the body's absorption of nutrients.
[0022] The medicinal effects of raw Atractylodes macrocephala: warm in nature, sweet and bitter in taste, it can strengthen the spleen and replenish qi, dry dampness and promote diuresis, strengthen the spleen and stomach's transportation and transformation functions, and indirectly improve the qi and blood supply to the feet; it works synergistically with Codonopsis pilosula to enhance the "qi-replenishing" effect, and at the same time reduce dampness accumulation in the feet caused by spleen deficiency through its drying effect.
[0023] The medicinal effects of Pinellia ternata: warm in nature, spicy in taste, it can dry dampness and resolve phlegm, relieve adverse reactions and stop vomiting. It can regulate phlegm and dampness in the body through the meridians and relieve the heaviness of the feet. Combined with tangerine peel and raw white atractylodes, it can enhance the drying effect and relieve foot edema and fatigue caused by phlegm and dampness.
[0024] The medicinal effects of Scutellaria baicalensis: It is cold in nature, bitter in taste, clears away heat and dampness, purges fire and detoxifies, can clear dampness and heat from the feet and inhibit bacterial growth; it balances the warm nature of Sichuan pepper and dried ginger, and at the same time prevents foot infections caused by a damp and hot environment during foot bathing.
[0025] Medicinal effects of peach kernel: It is mild in nature, bitter and sweet in taste, and can promote blood circulation, remove blood stasis, moisten the intestines and promote bowel movements. It can dredge blocked blood vessels in the feet, improve microcirculation, and assist angelica and Chuanxiong in enhancing the blood circulation effect. It has a significant conditioning effect on foot pain and dull skin color caused by blood stasis.
[0026] The medicinal effects of dried ginger: It is hot in nature, spicy in taste, warms the middle and dispels cold, restores yang and unclogs the meridians. Its warm nature can penetrate into the meridians of the feet and dispel cold evil. It works together with cinnamon tip and Sichuan pepper to enhance the effect of dispelling cold. It is especially suitable for cold and painful feet caused by wind-cold and dampness.
[0027] Medicinal effects of Poria cocos: It is mild in nature, sweet and light in taste, and can promote diuresis and eliminate dampness, strengthen the spleen and calm the mind. It can expel moisture from the body through the meridians of the feet, while calming the mind and promoting sleep; combined with Alisma orientalis and Stephania tetrandra, it can enhance the diuretic effect, and at the same time improve the body's absorption and utilization of other medicinal materials through the spleen-strengthening effect, and relieve fatigue after foot bath.
[0028] Preferably, the raw materials are all Chinese herbal medicine slices.
[0029] Preferably, the purple kudzu root is the dried root of kudzu, which is cleaned and cut before use, and has a puerarin content of ≥2.4%.
[0030] Preferably, the raw gypsum is calcium sulfate dihydrate (CaSO4·2H2O) with a particle size of 80-120 mesh and a calcium sulfate content of ≥95%.
[0031] Preferably, the foot bath health care powder is a fine powder with a particle size range of 100-120 mesh and a moisture content of ≤8.0%.
[0032] Preferably, the heavy metal content of the foot bath health powder is: lead (Pb) ≤ 5.0 mg / kg, cadmium (Cd) ≤ 1.0 mg / kg, mercury (Hg) ≤ 0.3 mg / kg, arsenic (As) ≤ 2.0 mg / kg.
[0033] Preferably, the microbial limits of the foot bath health powder are: bacterial count ≤ 1000 cfu / g, mold and yeast count ≤ 100 cfu / g, no coliform bacteria detected per 1g, and no salmonella detected per 10g.
[0034] The preparation method of foot bath health care powder comprises the following steps:
[0035] S1. Raw material pretreatment: Screen the raw materials of Chinese medicinal materials, remove impurities and moldy products, wash and drain;
[0036] S2 Mixing: Weigh the raw materials in parts by weight according to the formula, put into a mixing device (such as a three-dimensional motion mixer), mixing time 20-30 minutes to evenly distribute the raw materials;
[0037] S3 drying: the mixed raw materials are placed in a drying device (such as a hot air circulation oven), the drying temperature is 60-70 ℃, the drying time is 2-3 hours, to a moisture content of ≤8.0%;
[0038] S4 crushing: using a universal grinder to crush the dried raw material, through a 100-120 mesh sieve, collect the fine powder;
[0039] S5. Bag packaging: The fine powder is divided into bags of 10-20g per bag using an automatic packaging machine and sealed.
[0040] Compared with the prior art, the present invention has the following beneficial effects:
[0041] 1. The present invention combines 22 Chinese medicinal materials such as Pueraria lobata and Ephedra, covering the effects of dispelling exterior pathogens, clearing heat, replenishing qi, and promoting blood circulation; Ephedra, cinnamon tip, and Saposhnikovia divaricata work together to dispel exterior pathogens and dispel cold, and promote qi and blood circulation in the feet; Codonopsis pilosula, Poria cocos, and raw Atractylodes macrocephala strengthen the spleen and replenish qi, and regulate the internal organs through the meridians of the feet; Angelica sinensis, Chuanxiong, and peach kernel promote blood circulation and nourish blood, improve foot microcirculation, and achieve the synergistic effect of "nourishing the feet and regulating the body" in multiple dimensions, which is suitable for the health needs of people with cold and damp constitution, insufficient qi and blood, etc.
[0042] 2. This invention uses a standardized process of "screening-mixing-drying-crushing-packaging" to ensure the purity of raw materials and the retention of active ingredients. The drying process controls temperature and time to prevent the loss of active ingredients (such as puerarin and volatile oils). The 100-120 mesh fine powder particle size ensures rapid dissolution and transdermal absorption efficiency during foot baths, enhancing the user experience and health benefits.
[0043] 3. The present invention reduces the risk of use by strictly limiting the quality of raw materials and finished product indicators; it can be conveniently used by both families and health institutions, and can achieve daily health care through foot bathing, without the need for professional operation, and has strong promotion potential. BRIEF DESCRIPTION OF THE DRAWINGS
[0044] Figure 1 It is a schematic diagram of the overall process of the present invention. DETAILED DESCRIPTION
[0045] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.
[0046] As attached Figure 1 As shown:
[0047] Example 1: The present invention provides a foot bath health care powder, which is made from the following raw materials in parts by weight: 26 parts of purple kudzu root, 18 parts of ephedra, 22 parts of cinnamon tip, 13 parts of raw white peony root, 9 parts of licorice, 9 parts of Sichuan pepper, 13 parts of fennel, 13 parts of wood stephania, 26 parts of raw gypsum, 21 parts of siler, 20 parts of codonopsis, 22 parts of raw rehmannia, 7 parts of angelica, 13 parts of chuanxiong, 9 parts of oriental water chestnut, 17 parts of tangerine peel, 15 parts of raw atractylodes, 10 parts of light pinellia, 10 parts of scutellaria, 5 parts of peach kernel, 13 parts of dried ginger, and 20 parts of poria. The above raw materials are all Chinese herbal medicine slices;
[0048] Purple kudzu root is the dried root of kudzu, which is cleaned and cut before use, and the puerarin content is ≥2.4%;
[0049] Gypsum is calcium sulfate dihydrate (CaSO4·2H2O), with a particle size of 80-120 mesh and a calcium sulfate content of ≥95%;
[0050] Foot bath health powder is a fine powder with a particle size range of 100-120 mesh and a moisture content of ≤8.0%;
[0051] Heavy metal content of foot bath health powder: lead (Pb) ≤ 5.0mg / kg, cadmium (Cd) ≤ 1.0mg / kg, mercury (Hg) ≤ 0.3mg / kg, arsenic (As) ≤ 2.0mg / kg;
[0052] Microbial limits for foot bath health powder: bacterial count ≤ 1000 cfu / g, mold and yeast count ≤ 100 cfu / g, no coliform bacteria detected per 1g, no salmonella detected per 10g.
[0053] Example 2:
[0054] Reference Figure 1 :
[0055] The preparation method of foot bath health care powder comprises the following steps:
[0056] S1. Raw material pretreatment: Screen the raw materials of Chinese medicinal materials, remove impurities and moldy products, wash and drain;
[0057] S2 Mixing: Weigh the raw materials in parts by weight according to the formula, put into a mixing device (such as a three-dimensional motion mixer), mixing time 20-30 minutes to evenly distribute the raw materials;
[0058] S3 drying: the mixed raw materials are placed in a drying device (such as a hot air circulation oven), the drying temperature is 60-70 ℃, the drying time is 2-3 hours, to a moisture content of ≤8.0%;
[0059] S4 crushing: using a universal grinder to crush the dried raw material, through a 100-120 mesh sieve, collect the fine powder;
[0060] S5. Bag packaging: The fine powder is divided into bags of 10-20g per bag using an automatic packaging machine and sealed.
[0061] As can be seen from the above, the staff first pre-processed the raw materials: they selected 22 kinds of Chinese medicinal materials such as purple kudzu root and ephedra, removed impurities (such as mud, insect-eaten parts) and moldy products, washed the surface stains with running water, and drained the water (moisture residue ≤ 10%). This step can ensure the cleanliness of the raw materials and prevent impurities from affecting the quality of the finished product; then, each raw material was weighed according to the weight of the formula, and put into the three-dimensional motion mixer. The mixing time was set to 25 minutes. The equipment used three-dimensional swing (horizontal, vertical, and flipping motion) to evenly mix the Chinese medicinal materials of different densities and shapes to ensure the stability of the subsequent medicinal effect; then, the mixed raw materials were transferred to the hot air circulation machine. The drying process is carried out in a circular oven at a set temperature of 65°C for 2.5 hours. The hot air circulation system makes the temperature in the oven uniform, quickly evaporates the moisture of the raw materials, and prevents high temperature from destroying the effective ingredients (such as the volatile oil in ephedra). After drying, the moisture content is tested to ensure that it is ≤8.0%. After that, the universal grinder is started to grind the dried raw materials, filter them through a 100-120 mesh screen, collect the fine powder through the screen, and grind and sieve the coarse residue again to ensure that the particle size of the finished product is uniform and the dissolution rate during foot bath is improved. Finally, an automatic packaging machine is used to bag the fine powder according to the specification of 15g per bag, and the bags are sealed to prevent moisture absorption and oxidation, thereby extending the shelf life.
[0062] When using, the user first takes 1 bag (15g) of foot bath health care powder, prepares 3-5L of warm water (the temperature is between 40-45℃, which can be adjusted according to personal tolerance, and it is recommended not to exceed 50℃), slowly pour the powder into the warm water, stir for 3-5 minutes to fully dissolve the powder (because the fine powder has small particle size, it dissolves quickly and there is no obvious precipitation of impurities); then, put the feet into the foot bath and soak for 20-30 minutes. During this period, warm water can be added in time to maintain the temperature. During the foot bath, the effective ingredients of Chinese herbal medicine (such as puerarin through transdermal absorption and ephedra volatile oil stimulates the foot meridians) act on the acupuncture points and skin of the feet to achieve the effects of dispelling cold, activating blood circulation, and invigorating qi; after the soaking, dry your feet with a clean towel, no need to rinse again, you can cooperate with foot massage (such as rubbing the Yongquan acupoint and pressing the Taichong acupoint) to enhance the health-preserving effect, 1-2 times a day, 7-10 consecutive days as a cycle, and the frequency of use can be adjusted according to your physical condition.
[0063] Working principle: 22 Chinese medicinal herbs cover categories such as diaphoresis (ephedra, cinnamon tip), heat-clearing (gypsum, scutellaria), qi-tonifying (dangshen, raw atractylodes), and blood circulation (angelica, peach kernel). Through precise combination, each ingredient penetrates through the foot skin and conducts through the meridians, synergistically regulating the functions of the internal organs. For example, ephedra and saposhnikovia dispelling cold, promote the circulation of qi and blood in the feet, creating conditions for the absorption of effective ingredients; codonopsis and poria strengthen the spleen and replenish qi, strengthening the body's ability to generate qi and blood; angelica and chuanxiong promote blood circulation and improve foot microcirculation, achieving the linkage of "nourishing the feet and regulating the body";
[0064] Through the screening, mixing, drying, crushing and packaging processes, we ensure the purity of raw materials and the stability of active ingredients. The drying temperature is controlled (60-70℃) to avoid high temperature damage to heat-sensitive ingredients (such as volatile oils); the 100-120 mesh fine powder particle size increases the contact area between the drug and the foot skin, improves the efficiency of transdermal absorption, and ensures the effectiveness of foot baths.
[0065] During foot bath, warm water opens the pores of the foot skin, and the fine powder of Chinese medicine dissolves to form a medicinal bath environment. The effective ingredients (such as puerarin and alkaloids) enter the blood circulation through transdermal absorption, while stimulating the meridian acupoints of the foot (such as Yongquan acupoint and Taichong acupoint), regulating the functions of the internal organs through meridian conduction, and achieving the purpose of health care.
[0066] The embodiments of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.
Claims
1. Foot bath health care powder, characterized in that, The invention is prepared from the following raw materials in parts by weight: 26 parts of purple kudzu root, 18 parts of ephedra, 22 parts of cinnamon tip, 13 parts of raw white peony root, 9 parts of liquorice, 9 parts of Sichuan pepper, 13 parts of fennel, 13 parts of stephania tetrandra, 26 parts of raw gypsum, 21 parts of siler, 20 parts of codonopsis pilosula, 22 parts of raw rehmannia, 7 parts of angelica, 13 parts of ligusticum, 9 parts of oriental water plantain, 17 parts of dried tangerine peel, 15 parts of raw atractylodes, 10 parts of pinellia ternata, 10 parts of scutellaria baicalensis, 5 parts of peach kernel, 13 parts of dried ginger and 20 parts of poria.
2. The foot bath health care powder as claimed in claim 1, characterized in that: The raw materials are all Chinese herbal medicine slices.
3. The foot bath health care powder as claimed in claim 1, characterized in that: The purple kudzu root is the dried root of kudzu, which is used after being cleaned and cut, and has a puerarin content of ≥2.4%.
4. The foot bath health care powder as claimed in claim 1, characterized in that: The raw gypsum is calcium sulfate dihydrate (CaSO4·2H2O), with a particle size of 80-120 meshes and a calcium sulfate content of ≥95%.
5. The foot bath health care powder as claimed in claim 1, characterized in that: The foot bath health care powder is fine powder with a particle size range of 100-120 meshes and a moisture content of ≤8.0%.
6. The foot bath health care powder as claimed in claim 1, characterized in that: The heavy metal content of the foot bath health-care powder is as follows: lead (Pb) ≤ 5.0 mg / kg, cadmium (Cd) ≤ 1.0 mg / kg, mercury (Hg) ≤ 0.3 mg / kg, and arsenic (As) ≤ 2.0 mg / kg.
7. The foot bath health care powder as claimed in claim 1, characterized in that: The microbial limits of the foot bath health powder are: bacterial count ≤ 1000 cfu / g, mold and yeast count ≤ 100 cfu / g, no coliform bacteria detected per 1g, and no salmonella detected per 10g.
8. A method for preparing a foot bath health-care powder, the foot bath health-care powder according to claims 1-7, characterized in that: The following steps are involved: S1. Raw material pretreatment: Screen the raw materials of Chinese medicinal materials, remove impurities and moldy products, wash and drain; S2 Mixing: Weigh the raw materials in parts by weight according to the formula, put into a mixing device (such as a three-dimensional motion mixer), mixing time 20-30 minutes to evenly distribute the raw materials; S3 drying: the mixed raw materials are placed in a drying device (such as a hot air circulation oven), the drying temperature is 60-70 ℃, the drying time is 2-3 hours, to a moisture content of ≤8.0%; S4 crushing: using a universal grinder to crush the dried raw material, through a 100-120 mesh sieve, collect the fine powder; S5. Bag packaging: The fine powder is divided into bags of 10-20g per bag using an automatic packaging machine and sealed.