Numbness when urinating may be caused by autonomic dysfunction, cerebral infarction, diabetes mellitus, and peripheral neuropathy and other reasons. 1. Autonomic Nerve Dysfunction: Autonomic Nerve Dysfunction is considered to be caused by mental tension, heredity and mental stimulation. Patients will have numbness of limbs, dizziness, stomach pain, insomnia, abnormal wandering sensation and so on, so the patients will have numbness of body when urinating. 2. Cerebral infarction: cerebral infarction is caused by cerebral atherosclerosis, cardiogenic embolism, small artery occlusion and other factors. Patients will appear unilateral limb numbness or weakness, crooked mouth, slurred speech, blurred vision and other manifestations, so patients with cerebral infarction will have numbness when urinating. 3. Diabetes mellitus: the cause of diabetic peripheral neuropathy is not clear, considering factors related to neuroinflammatory injury, microangiopathy. Patients will experience numbness, ant walking sensation and other sensory abnormalities. If the patient has diabetic peripheral neuropathy, there will be numbness when urinating. 4. Other: patients with peripheral neuropathy, lumbar intervertebral disc herniation can also lead to symptoms of numbness when urinating. Patients who experience numbness when urinating need to consult a doctor in a timely manner, and need to choose the appropriate measures for treatment under the guidance of the doctor.