Whether a wound can heal without a skin graft is based on the patient’s trauma. Usually if the trauma area is small the patient is no need for skin grafting, it is through the body’s self-recovery function, if the patient’s trauma area is large, the epidermis can not be close to the center for self-repair, it is necessary to carry out skin grafting in order to heal. For larger wounds with a diameter greater than 3 centimeters, skin grafting is an option. The skin graft must be taken from the patient’s own body, and how big the wound is, how big the skin must be taken. The results of skin grafting are reliable, but there are disadvantages such as differences in the color of the skin fragments and scar contractures. Flap surgery or skin expander surgery can also be used for small scars, which is more effective but more technically demanding. However, for those who are intolerant to surgery due to systemic diseases, those who have a large amount of tendons, bone tissue, nerves, blood vessels, etc. exposed on the wound, if the wound is large and cannot heal, it is not suitable to use skin grafting, and skin flap surgery should be used. If you have a large wound, you should go to the hospital for appropriate surgical treatment, and strengthen nutrition, supplement high protein and other nutrients to promote wound healing. In order to avoid the delay of wound healing.