Injury to the peripheral nerve trunk or its branches caused by cuts, strains, crush injuries, burns, bruises, electrical injuries and other injuries is peripheral nerve injury, and it is a very common type of clinical injury. For peripheral nerve injury, the following methods can be adopted for rehabilitation training: 1. Conduct rehabilitation training, maintain the functional position of the limb in the early stage of injury, prevent joint contracture and deformation, within the pain-free range or within the normal range of motion of the joint, this activity must not cause pain in the joint, and must not over-stretch those paralyzed muscles. The peripheral nerve and tendon suture should be performed after adequate fixation. When the limb appears to be able to move actively, for example, the hand can be seen to contract actively, active activities should be actively performed at this time, for example, when the muscle strength is grade 1, isometric contraction and muscle force contraction and assisted contraction can be done. Muscle strength at level 2 or higher can do assisted contraction and remove active movement under gravity, such as along the table, without fighting gravity, to move. When the muscle strength reaches level 3, resistance exercise can be performed, along with some speed, endurance, coordination and balance training. The main methods of resistance exercise are progressive resistance exercise, short maximum load isometric contraction training, and isometric training. The principle of training should be large weight and few repetitions; 2. Physical factor therapy methods, such as ultrashort wave, millimeter wave, wax therapy, etc., can improve patient circulation, promote edema absorption and relieve pain. Low-frequency and medium-frequency electrotherapy, laser treatment has the effect of anti-inflammation and promoting nerve regeneration. Early application of ultrashort wave and microwave therapy can eliminate inflammation, promote edema absorption, and facilitate nerve regeneration. Bathing with warm water and whirlpool bath can relieve muscle tension, promote local circulation and loosen adhesions. If passive and active exercises are performed in the water, muscle atrophy and joint contracture can also be prevented. 3. After peripheral nerve injury, the joint should be fixed in a functional position at an early stage, and splints should be used to prevent deformities and correct contractures. Power splints can even help paralyzed muscles to do some simple exercises; 4, targeted work activities, such as weaving, clay modeling pinch mud these and so on, can enhance muscle flexibility and endurance.