If the skin is injured and the wound is more than one centimeter, the natural healing speed will be slower. It is necessary to carry out acupuncture treatment in the hospital to speed up the wound healing. Suture needle can align and fix the wound edges together, and promote wound healing and scarring. If the depth of the wound reaches the dermis, it should also be treated with stitches to ensure that the wound is completely closed and healed. For a large area of scar, laser treatment can be considered. Laser repairs damaged cells through the principle of light and heat, and promotes the rapid recovery and health of skin.