In order to avoid scarring, wounds can be cleaned and disinfected thoroughly, scabs can be removed naturally, and laser therapy can be used. 1. If the wound is infected, it will usually leave a scar, so usually when the wound is injured, do a thorough debridement and disinfection of the wound, so that there may be embedded particles of dust and other foreign matter rinsed out, to avoid wound infection. 2. When the wound scabs are not off, tearing off the scabs in advance will lead to pigmentation and leave scars, and even cause secondary infections, so the scabs should be allowed to fall off naturally. 3. Laser therapy can effectively remove skin scars by dissolving the skin’s deposited pigment particles and promoting collagen regeneration. It should be noted that the use of drugs should do drug sensitivity test, laser therapy should go to a large hospital.