Electrical nerve stimulation is a proven treatment for peripheral nerve injury and is now widely used in the treatment of peripheral nerve injury and disease from various causes, and is an integral part of modern rehabilitation medicine. For mild nerve injuries, electrical nerve stimulation combined with other rehabilitation treatments can be very effective in relieving numbness and weakness caused by nerve damage. For severe nerve injuries, such as brachial plexus injuries, nerve stimulation has been shown to have a significant effect on postoperative rehabilitation. Studies have shown that targeted nerve stimulation after surgery can promote nerve regeneration and accelerate nerve growth, thus shortening the recovery time and enabling patients to recover better. In addition, the operation of the nerve stimulator is relatively simple, which is suitable for patients to carry out self-treatment at home. 1. Position: Sitting or lying position, with the upper limbs flat on the table or placed at the side. 2, parameter setting: stimulation intensity to feel the pinprick sensation is appropriate, if the affected limb does not feel, then you can first test on the healthy limb, adjust the stimulation intensity and then on the affected limb for treatment. The time is generally 30 minutes, 2 to 3 times a day. 3, the choice of stimulation location: different nerve injury patients, the need to stimulate the site is also different. There are two stimulation electrodes, which should be placed at the projection of the body surface of the nerve and the innervated muscles to be restored.