A rotting piece on the face that has not been good may be due to infection of the wound, which in turn forms a chronic wound, and can be treated with daily dressing changes, surgical debridement, and topical antibacterial products. 1. Daily dressing change: choose saline, chlorine disinfectant, povidone-iodine, etc., wash the wound adequately, cover with sterile dressing, keep the wound clean and tidy. 2. Surgical debridement: If the wound is covered with more necrotic tissue and pus, surgical debridement can be chosen to fully remove the necrotic tissue, so that the wound can heal again. 3. Topical antimicrobial products: If the wound is difficult to heal for a long time, often due to bacterial colonization of the wound, topical antimicrobial preparations can be used, such as alginate anionic dressings, silver ion gel and so on. If the wound is difficult to heal for a long time, please go to the hospital in time to avoid further causing systemic infection and delaying the condition.