1.Gentian violet (violet potion): speed up wound crusting and wound healing. 2.Red mercury (red potion): protects wounds and has antibacterial effects. 3.Alcohol and iodine: used for surface disinfection of non-mucous membrane wounds. Not for disinfection of broken wounds. 4, hydrogen peroxide: used for basic disinfection of contaminated mucous membrane or broken wounds. Treatment of common wounds 1, clean wounds disinfected with iodine volt, less irritation, good effect; for clean, new granulation wound, can also be covered with petroleum jelly oil gauze to reduce the pain of patients when changing medication, and reduce tissue fluid exudation, loss. 2, rich blood supply, small chance of infection of the wound can be saline simple wetting, sterile auxiliary material dressing can be. 3, for wounds with skin defects, the defect area is repeatedly rinsed with saline, and the surrounding area can be routinely disinfected with iodophor, after disinfection, covered with saline gauze or petroleum jelly gauze, saline gauze is good for keeping the wound fresh and dry, and petroleum jelly gauze is good for the growth of granulation of the wound. The principle of infected or contaminated wounds is to drain the pus, chap the sutures if necessary, expand the wound, drain it thoroughly, flush the wound repeatedly with hydrogen peroxide and saline, and give debridement if there is necrotic tissue. Of course, the infected wound should be changed every day. In addition, when changing the medication for a septic incision, don’t mind the stench, and be sure to carefully wipe off the pus moss at the incision, and don’t dare to touch the incision because of the patient’s pain. 5, decubitus ulcer, septic osteomyelitis and other infected wounds: iodophor disinfection around the wound, while the wound to hydrogen peroxide, saline rinse, gentamicin dressing cover. 6. For osteomyelitis with bone outgrowth, the dressing change should first be diligent, because there is a lot of exudation and the dressing should be more. In the process of dressing change, necrotic tissue should be removed at any time, and gauze can be placed in the medullary cavity. The empirical method is to first rinse the trauma with saline, then with 0, 1% iodophor, then with hydrogen peroxide, and finally with Qingda gauze wet and dressing covered. When the trauma surface is fresh and less exuding, surgery is performed to remove the dead and sclerotic bone, and the trauma surface is covered with a suitable musculocutaneous flap and fixed externally with an external fixation frame, and then bone lengthening is performed after the flap becomes viable. 7. For open fractures with external fixation, the procedure of dressing change follows: firstly, disinfection with iodophor (while cleaning and removing necrotic tissues), secondly, disinfection with hydrogen peroxide, then saline rinsing, and finally furacilin filling to cover the wound surface. Waiting for the growth of granulation, free flap coverage is performed. 8. Fat liquefaction of the incision: fat liquefaction is easy to occur in fat-rich areas, and at this time, the incision is widely opened (all areas of fat liquefaction are opened), culture + drug sensitivity, and enhanced drug exchange. Such an incision should be changed for a long time, in order to shorten the time , after the initial disinfection in the local subcutaneous injection of gentamicin, place glucose powder into the incision, change the medication every day, wait for the wound to exude less after the oil gauze to stimulate the growth of granulation, fresh after the second phase of suture or butterfly tape pulling together. 9, long ulcerated wounds, to use Chinese herbal medicine change. Chinese medicine dressing change has its uniqueness, but usually there is no sterile concept. For example, for refractory sinus tracts (such as after brain surgery, after heart bypass surgery or sinus tracts caused by chronic osteomyelitis, usually early with eight two Dan or nine one Dan + red oil ointment, lifting rot and removing pus, and late with raw muscle san + red oil ointment closure, the effect is very good, even if the Pseudomonas aeruginosa or drug-resistant Staphylococcus aureus infection can be well cured. 10.For contaminated oily wounds, we here use turpentine to wash away the oil stains. 11.For old granulation wound: such granulation tissue regeneration ability is poor (dark red color, not fresh, uneven height, sometimes old bleeding appearance), the surrounding tissue is not easy to heal, scrape the surface granulation tissue with a scraper or cut out, so that it bleeds to reveal fresh granulation, external rubber paste (this is the Chinese medicine to decompose the muscle, Western medicine will be flushed with hydrogen peroxide to achieve the purpose of decomposition). If there is pus, attention should be paid to the presence of pus cavities or sinus tracts, and the change in the patient’s body temperature should be noted. 12, for Pseudomonas aeruginosa infected wounds: characterized by pus is light green, there is a special sweet fishy odor, if the wound surface crust, pus accumulation under the scab, with necrotic tissue, to remove the scab, pus and necrotic tissue. Burn trauma early green infection can be cut scab implants. Also available 1% to 2% phenoxyethanol wet dressing, or 0, 1% gentamicin, 1% silver sulfadiazine, 10% methanesulfamilone and other solutions wet dressing. Traumatic surface such as small available 3% acetic acid.