Skin defects that do not have a good soft tissue bed and have little chance of healing on their own and cannot be repaired directly by direct suturing on both sides of the wound are suitable for any flap. Arbitrary flap surgery, also known as arbitrary flap formation, is a common method of surgically repairing skin defects by surgically cutting a piece of skin tissue with a pedicle next to the wound and covering it so that it receives a sufficient blood supply to keep the skin tissue from necrotic death. Arbitrary flap surgery may cause symptoms of infection in the area of the skin graft, and there may also be impaired blood supply and infected pigmentation that affects aesthetics. After the operation, please pay attention to rest, keep correct sleeping position, eat less spicy and stimulating food, pay attention to nutritional supplementation, eat more high vitamin and high protein food. If you have any discomfort, please consult the doctor in time and treat it actively, so as not to miss the condition.