For calf amputation surgical procedure, it is usually necessary to actively carry out preoperative preparation, to exclude contraindications to surgery, can be arranged for surgical treatment. Preoperative blood preparation is required, and the surgery usually needs to be carried out under general anesthesia or lumbar-hard anesthesia. First, a flap needs to be designed, and then surgical treatment is performed, such as osteotomy of the tibia and fibula first, and then the muscle tendons, blood vessels, and nerves are dissociated. In this process, it is important to strictly stop the bleeding and take care of the nerves, otherwise there is a possibility of neuralgia or the formation of neuroma at a later stage. The wound is sutured according to the designed flap, and a rubber tube is left to drain the wound, and when the patient is awake, he is sent to the hospital room and is actively treated with fluids.