Numbness of hands and arms may be caused by physiological reasons and pathological reasons such as cervical spondylosis, peripheral neuropathy, thoracic outlet syndrome, etc. The former can be observed by resting, while the pathological conditions need medication, rehabilitation and surgery. 1. Physiological reasons: improper sleeping position, localized compression, elbow impact and other reasons can cause numbness, which can be relieved by proper rest. 2. Pathological causes (1) Cervical spondylosis: Numbness of the hands and arms may occur due to compression of the nerve root by a herniated disc. Most of the cervical spondylosis can be relieved by massage, acupressure, traction, etc., and serious cervical spondylosis can be treated by surgery. (2) Peripheral neuropathy: It is most commonly caused by diabetes, and may have pain and burning sensation. The main treatment is to treat the primary disease (controlling diet, exercise and taking hypoglycemic drugs), and if necessary, taking drugs to nourish the nerves (e.g., methylcobalamin) or improve microcirculation (e.g., pancreatic kininogenase). (3) Thoracic outlet syndrome: In addition to numbness of the hands and arms, there may be pain, weakness and other sensations, and in severe cases, chills and bruises may occur. For patients with mild symptoms, hot compresses and manipulative massage can be applied, drugs such as Pregabalin and Ibuprofen can be taken for pain relief, and if conservative treatment is ineffective, thoracic outlet decompression can be performed to relieve symptoms. If the hand and arm numbness can not be relieved in a short period of time, it is recommended to go to the hospital in time to identify the specific cause of the disease and then targeted treatment.