After scabbing, with the recovery of the injured soft tissues under the scab, the scab will slowly detach, which is a normal process of tissue repair and may leave different degrees of discoloration. Although the repair process varies among different parts of the body after skin tissue injury, the evolution process can be basically divided into three stages: inflammation, proliferation, and molding. Scabs indicate that the wound is already in the late healing state, under normal circumstances, 7 to 14 days to fall off. Do not remove the scabs by hand during the shedding period, so as not to destroy the collagen fibers that have been shaped, thus changing the wound healing process, causing secondary trauma bleeding and prolonging the wound healing time. Usually need to keep the wound skin clean and dry, eat more fresh fruits and vegetables, do not eat spicy, greasy, stimulating food, will help the wound to heal soon. It is recommended to consult a doctor in time after the skin injury, and follow the doctor’s instructions for treatment and care.