(1) Head, face, neck: 4-5 days (2) Lower abdomen, perineum: 6-7 days (3) Chest, upper abdomen, back, buttocks: 7-9 days (4) Extremities: 10-12 days (5) Abdominal reduction sutures: 14 days (6) Delayed removal of sutures in old age, malnutrition, diabetes 2) Incision healing records (1) There are three types of surgical incisions: Type I incisions: clean incisions. Such as thyroid surgery, breast surgery, hernia surgery Type II incision: may contaminate the incision. Such as gastrointestinal surgery, biliary surgery, simple appendicitis resection Ⅲ type of incision: contaminated incision. Such as purulent cholecystitis, purulent appendicitis, anal surgery (2) incision healing is divided into three levels: Class A healing: excellent healing, no adverse reactions Class B healing: inflammation, such as redness, hard nodes, hematoma, effusion, etc., but not purulent Class C healing: incision purulent, incision and drainage