I. Immediate out-of-hospital treatment for patients with hand trauma: 1. Flush the wound: remove the dirt around the wound, tap water (use sterile saline if possible, or clean natural water if the conditions are poor) repeatedly rinse the wound for 10~30 minutes, and precautions when disinfecting: prevent iodine and alcohol from flowing into the wound, and avoid the use of colored disinfectants such as iodine as far as possible to avoid affecting the observation of the blood flow of the limb (finger) body. 2. Preservation of severed limb (finger): After simple rinsing, the limb (finger) should be wrapped with sterile gauze or clean gauze, and then wrapped with clean plastic bag, and the plastic bag should be placed in a glass bottle or other containers, and ice cubes should be put in between the glass bottle and the plastic bag to reduce the metabolism of the severed limb (finger). 3.Transportation of patients: transfer the patients as quickly as possible to the nearby hospitals with diagnostic and treatment capabilities for treatment. Postoperative treatment and precautions for patients with hand trauma: 1. No smoking. Cigarettes are the killer of hand trauma patients, the nicotine in cigarettes makes the blood vessels constricted, which will easily cause the limb (finger) to have vascular crisis and lead to ischemic necrosis. For the sake of your health and the health of others, please do not smoke in the ward and public places around the ward. 2. Stay in bed for 1~2 weeks to avoid vascular crisis, which may affect the survival of the limb (finger). 3.Keep the affected limb warm. Roasting lamp or incandescent lamp from the affected limb 40cm or so irradiation to expand blood vessels (Note: prohibited directly to the wound baking), but the affected limb blood conditions are poor when it is not advisable to use the roasting lamp, otherwise it will increase the metabolism of local tissues. Ideal room temperature conditions should be maintained at 22 ~ 25 ° C, in the room temperature close to 30 ° C can be exempted from the use of baking lamp. Appropriate elevation of the affected limbs will help reduce swelling. 5, Postoperative routine “three anti-” treatment, that is, the use of antibiotics to prevent infection, the use of anti-vasospasm drugs, as well as the use of anticoagulant drugs. 6.Cooperate with medical personnel, closely observe the blood circulation of the affected limb, immediately deal with postoperative vascular crisis, and save the limb (finger). The purpose of postoperative rehabilitation is to promote blood circulation, reduce swelling and pain, soften scar, prevent muscle atrophy, reduce adhesion and restore joint mobility. 1, in the limb before the recovery of sensation and poor blood circulation, the use of heat therapy needs special attention to avoid burns. 2. It takes a long time for the nerve function of the replanted limb (finger) to recover, and during this period, the distal muscles will undergo wasting atrophy. Physiotherapy can reduce muscle atrophy, and once the nerve function is restored, the muscles will soon recover their function. Physical therapy can reduce the muscle atrophy, and once the nerve function is restored, the muscle will recover its function very soon. The use of electro-acupuncture therapy of Chinese medicine can passively stimulate the muscle contraction, which can reduce the muscle atrophy. 3, the reimplantation limb (finger) body sensory recovery directly affects the limb (finger) body function, so in the sports rehabilitation at the same time, should be carried out special sensory in the training. Treatment of hyperplastic scar: ultrasound, medium frequency electrotherapy, wax therapy, massage, passive pulling activities and the use of special supports. (5) Safety education for patients with hyperalgesia: (1) Avoid contact with cold, hot and sharp instruments; (2) Avoid using tools with small handles; (3) Don’t grip objects with excessive force; (4) Avoid using the affected limbs for a long time; (5) Frequently check whether there are any signs of pressure on the parts of the tools, such as redness, swelling, heat and pain, etc.; (6) The skin of the hyperalgesia or sensory deficit area should be handled instantly in the case of skin breakage. 6) Finger Fracture Generally 4~6 weeks after the operation to remove the Kirschner’s pin, too long a period of time may affect the activities of the fingers. 7.Regular outpatient review and functional training under the guidance of the doctor.