Numbness of the hands is not necessarily a sign of disease, do not rule out non-disease causes, but may also be due to cervical spondylosis, peripheral nerve disease or Guillain-Barre syndrome. 1. Non-disease causes: due to incorrect sleeping posture, resulting in long-term compression of the hands, local blood circulation is impeded, resulting in numbness of the hands, do not need special treatment, relieve the compression can be relieved. 2. Cervical spondylosis: cervical spondylosis makes the vertebral canal compression of the nerves, the nerve regulation ability to reduce, making the hands numb. General cervical spondylosis patients with numbness in both hands for a period of time will also have a sense of weakness, should go to the hospital as soon as possible to do cervical spine CT to confirm the diagnosis. 3. Peripheral nerve diseases: such as peripheral neuritis or diabetes. If the patient himself has diabetes, numbness in both hands, we should consider the nature of diabetic neuropathy, should go to the hospital as soon as possible to do electromyography. 4. Guillain-Barre syndrome: this disease is an acute inflammatory peripheral neuropathy, the onset of the patient is acute, there may be limb weakness, sensory impairment and other discomforts, the early manifestation of numbness in both hands. The situation of numbness in both hands, excluding improper posture caused by the patient is recommended to consult a doctor in a timely manner, a clear diagnosis, early treatment.