When hand numbness occurs in the elderly, the following causes are mainly considered: First, if sudden numbness occurs in the ipsilateral lower limbs or face, it is considered to be caused by cerebrovascular problems, such as cerebral infarction, cerebral hemorrhage, or transient ischemic attack. If the numbness is a separate hand attack, it should be considered to be caused by cervical spondylosis. Second, hand numbness caused by trauma or overuse, resulting in nerve damage to the hand, such as brachial plexus nerve injury, carpal tunnel syndrome or elbow tunnel syndrome. For elderly people with hand numbness, a preliminary judgment should be made based on the relevant examination, the form of the onset of the disease, and the degree of hand numbness of the patient. If a patient has diabetes mellitus and numbness at the end of the extremities, diabetic peripheral neuropathy should be considered.