If the hand is numb, it may have nerve damage, it is recommended to go to the hospital in time to improve the nerve conduction velocity of both upper limbs and electromyography, to clarify whether the nerve damage and the extent and degree of damage, after the diagnosis can be given nerve nutrition, improve microcirculation and other treatment. For nerve nutrition, B vitamins, methylcobalamin, furanothiamine, cytarabine and murine nerve growth factor are used. To improve the microcirculation, we can use beprostatin sodium, tian dan tong luo capsule, etc. Patients can also undergo rehabilitation if they have the conditions. Rehabilitation means include magnetic heat, exercise and acupuncture. If the symptoms still do not improve after 2-3 months after the formal treatment mentioned above, a certain degree of sequelae may remain. However, the nerve recovery period is about 6 months, so patients still need to persist with the treatment. If the numbness is still present after 6 months, it may become a persistent symptom.