A powdered 
drug for treating 
pressure sore through 
external application belongs to an external 
western medicine preparation, which mainly solves the problem of 
pressure sore treatment. Raw materials for preparing effective components of the powdered 
drug comprise the following weight parts: 1-10 parts of 
sulfamethoxazole compound, 1-10 parts of 
metronidazole, 5-50 parts of 
Vitamin C, 5-50 parts of 
vitamin B complex, 5-50 parts of nicotinic acid, 3-15 parts of egg shell 
inner membrane dried by excipients. When in use, a mackintosh, a plurality of sterilized dressings and a sterilized dressing bag are padded under the part with 
pressure sore; the sore surface is repeatedly washed from top to bottom with 0.9 percent 
physiological saline extracted with a disposable sterilized 
syringe until the wound is clean and then is washed from top to bottom for twice to three times with 0.1 percent 
chlorhexidine solution; when 
blisters are formed, a disposable sterilized 
syringe is used for drawing out the liquid in the 
blisters; when necrotic tissues are formed, the necrotic tissues are eliminated with sterile 
forceps and sterile shears, then repeated washing from top to bottom with 0.1 percent 
chlorhexidine solution is carried out until the sore surface is clean, and then the prepared powdered 
drug is evenly sprinkled on the sore surface by a sterilized 
cotton bud; the thickness of the powdered drug is about 1mm; finally the sore surface is covered with sterilized 
petroleum jelly gauze and bandaged with sterilized dressing; the drug is changed once a day to prevent local compression. When new 
granulation tissue outgrows, the sore surface is scattered with 
drug powder without dressing, and the 
drug powder self drops off after scab is formed until the sore is healed. The powdered drug has simple and convenient preparation method, abundant drug resources, low cost, convenient and simple clinical application and remarkable effect, which is deeply welcomed by broad patients.