Prolonged numbness of the fingers without improvement should be the occurrence of peripheral nerve injury, ulnar nerve injury, as well as radial nerve injury, median nerve injury can cause prolonged numbness of the fingers, the innervation area is different. The area innervated by the radial nerve is the thumb side, the ulnar nerve innervates the little finger side, and the median nerve innervates the middle finger. Improvement of nerve conduction velocity of both upper limbs and electromyography can help to clarify which nerve is injured, as well as the degree and scope of the injury. Nutritional nerve drugs can be used, most commonly used B vitamins, such as vitamin B1, vitamin B12, but also can use methylcobalamin, adenosylcobalamin, or cytarabine capsule, murine nerve growth factor, and so on, but also can be used to activate blood circulation and improve microcirculation, such as eliminating thrombosis and enteric capsules, tian dan tongluo capsule, bei prostaglandin sodium, and so on. At the same time of treatment, we can do the etiological examination to clarify whether the patient has any compression injury, such as carpal tunnel syndrome, we can do ultrasound of the wrist, to clarify whether there is high blood glucose, high blood fat and other factors that cause blood circulation disorders, especially seen in the elderly and elderly women.