Lying hand numbness has the following reasons: 1, may be due to the patient’s posture is not correct, resulting in physical compression of the patient’s hand nerves, conduction disorders caused by the patient’s hand, but also may be the patient’s hand blood vessels, poor circulation resulting in hand numbness; 2, may be due to the existence of the patient’s cervical spondylosis, due to the posture of the lying position is not right, resulting in the patient’s cervical vertebrae protruding or displacement, compression of the hand nerves or intracerebral The patient may have cervical spondylosis, due to lying in a wrong posture, causing the patient’s cervical vertebrae to protrude or shift, compressing the nerves of the hand or blood vessels in the brain, triggering functional disorders, and appearing hand numbness; 3, may be due to the presence of cardiac failure, resulting in insufficient cardiac excretion of the patient, the participation of the blood in the body circulation is reduced, thus causing the patient’s peripheral circulatory disorders, and causing the hand numbness. Patients should correct their sleeping habits and sleep posture, get up patients should go to the hospital, if necessary, surgical intervention to relieve symptoms.