The numbness of half of the hands and feet mainly hangs neurology, half of the hands and feet of the numbness if the acute onset of disease, previous history of hypertension, diabetes mellitus, accompanied by dizziness, choking on water, salivation, slurred speech, limb weakness or limb twitching, may be an acute cerebrovascular disease, this time we need to do a head CT or magnetic resonance imaging examination, to find out whether there is cerebral hemorrhage or cerebral infarction. For example, patients with anxiety, depression and somatization disorder may have numbness in one half of the arms and legs along the obvious demarcation line of the body’s central axis, accompanied by worry, irritability, panic, chest tightness, sleep disorders and other somatization discomforts, and at this time, the neurological physical examination can be normal, and the cranial magnetic resonance or cervical magnetic resonance examination does not reveal any other abnormalities. The symptoms of such patients are mainly caused by the imbalance of nerve function.