Prevention of scarring after scabbing should pay attention to let the scab fall off naturally, pay attention to sun protection, keep local care, eat less spicy and stimulating food. 1. To keep the wound intact, do not pick the wound with your hands, squeeze the wound, do not scratch with your hands for itching, let the scab fall off naturally. 2. Pay attention to sun protection, reduce ultraviolet radiation, prevent the occurrence of pigmented dermatitis; at the same time pay attention to local care, pay attention to moisturizing and hydration, you can apply medical skin care products to establish a skin barrier, such as emollient milk; should also reduce the local mechanical friction. 3. Usually eat less spicy and stimulating food, maintain a light and healthy diet, do not drink alcohol; keep the local dry, avoid water, so as to avoid symptoms of infection due to poor local healing.