Whether or not a skin graft is needed for a 10 cm break in the foot should be determined by the depth and area of the break, not just the length of the wound. When the skin is broken as a result of trauma, if the depth of the local wound breakage is shallow, the width of the wound is not large, and the wound can be closed by clearing and suturing, then skin grafting is not needed, and most of the wound can heal on its own. When the skin damage is larger and wider, the area is large, the skin wound can not be closed by itself, or damage and dermis layer, or the wound does not heal for a long time, it is often necessary to carry out skin grafting surgery, which can promote the healing of the wound. When the skin injury should be timely to the regular hospital, please ask the professional doctor according to the trauma to be appropriate surgical treatment, regular postoperative medicine, remove the stitches treatment. And injection of tetanus antitoxin to prevent tetanus, taking amoxicillin, cefaclor and other antibiotics to prevent infection.