Numbness of hands and feet should be analyzed according to the trigger, symptoms, and characteristics of the onset, which is generally caused by three aspects: First, if the symptoms of numbness of hands and feet suddenly appear unilaterally, it is considered to be caused by cerebrovascular disease. When cerebrovascular disease causes damage to the patient’s sensory nerves, unilateral numbness in the hands and feet will occur, such as cerebral hemorrhage, cerebral infarction, transient ischemic attack will have this symptom, and the lesion is in the thalamus. Secondly, if the numbness of the hands and feet is symmetrical, it should be considered to be caused by peripheral neuropathy, such as diabetic peripheral neuropathy, or long-term alcoholism, which leads to a lack of B vitamins in the body, and peripheral nerve dystrophy will appear symmetrical numbness of the hands and feet. The third aspect, consider the poor blood circulation caused by, for example, after the body pressure numbness in the hands and feet is caused by poor blood circulation.