1. People with scar constitution should try to reduce the chance of injury. When suffering from acne, folliculitis and furuncle, don't squeeze it forcibly, and don't use drugs with strong stimulation, such as strong acid and alkali, to avoid leaving concave or hypertrophic scars. Use drugs safely under the guidance of a doctor.

2. Patients with emergency trauma should consult a plastic surgeon for debridement and suture or tissue defect restoration as far as possible to minimize the factors of scar formation.

3, plastic surgery should strictly abide by the principle of aseptic operation, surgical incision should be along the direction of dermatoglyphics or skin tension line, should be located in a relatively hidden position. The operator should move gently, the instruments should be sharp, and fine needles and thin wires should be used as much as possible. Keep the wound clean and free of foreign bodies. The suture should be accurate and adhere to the principle of tension-free suture.

4. Patients should avoid sun exposure after operation and eat less spicy food and bean food. We should know the common sense of scar formation and prevention and actively cooperate with doctors for treatment.