Knee scrapes require debridement, sterilization, and in severe cases, stitches and bandages, and the exact recovery time varies from person to person. Knee abrasions are very common in life and are very likely to occur during sports. If it is a mild abrasion, just bruising the surface of the skin, with a small amount of blood oozing, then you need to stop exercising, and do not walk excessively. Use saline, povidone-iodine, etc. to rinse and disinfect the wound, which can be wrapped with medical gauze to avoid bacteria from entering. Pay attention to the need to keep the affected area clean and dry environment, to reduce the possibility of wound infection. If the abrasion is more serious and the pain is more obvious, it is recommended to consult a doctor in time, and a professional doctor will carry out debridement, disinfection, suture and bandage treatment. Each patient’s recovery time is different, and it is recommended that the doctor for standardized treatment.