When hand numbness occurs after an electric shock to the hand, the subsequent treatment method needs to be decided according to the current energy. If the energy of electric shock is not large, the patient often only has local numbness, can rest or local hot compress to promote the recovery of sensory nerves, the symptoms will soon improve. In addition, you can also consider the oral administration of methylcobalamin, vitamin B complex tablets and other nerve-nourishing drugs to promote its recovery. However, if the energy of electric shock is relatively high, there is a risk of nerve damage and even deep muscle necrosis. Muscle necrosis usually manifests itself gradually after 2-3 days, usually with abnormal swelling of the local limb, and with local redness, swelling, heat, pain, and even soft tissue infection and purulent infection. If this occurs, it is necessary to wait for the necrotic boundary to stabilize and then slowly remove the necrotic muscles and tissues inside, and then do the follow-up treatment.