If you want to try not to leave scars, you must do the following: 1, you must strictly prevent wound infection, after the injury must be properly disinfected with disinfectant water to disinfect the wound, commonly used is to repeatedly rinse the wound with hydrogen peroxide, saline, and then coated with iodophor, gentian violet or red mercury and other disinfectant drops. If the wound is deep, you must also do the wound debridement suture surgery, after surgery according to the wound can be applied 2-3 days of antibiotics to prevent infection. 2, can be properly applied to promote the epidermal growth of drugs, now commonly used is the topical recombinant epidermal growth factor, after the wound sterilization sprayed on or painted on, can quickly promote the epidermal growth to minimize scar formation. 3, after the wound is completely healed can be used to promote the epidermal growth, minimize scar formation. The scar can be applied after the wound is completely healed by using scar paste or scar cream.