There are many reasons for the numbness of the hands at night, the common ones are cervical spine disease, carpal tunnel syndrome, diabetes and so on. 1. Cervical spine disease: degenerative cervical spine lesions, sleep at night for a long time in a position, may compress the nerve root, radiating to the hand, thus appearing hand numbness symptoms. 2. Carpal tunnel syndrome: sleeping at night due to exogenous compression, or internal infection and other factors, resulting in carpal tunnel stenosis, which affects the sensory nerves innervating the fingers abnormally, there will be numbness of the hand sleeping symptoms. 3. Diabetes: Diabetes may cause peripheral neuritis of the hands, which may also lead to numbness of the hands at night. Tingling hands at night, there may be other reasons, such as cerebrovascular disease, etc., should go to the hospital in a timely manner to check, clarify the cause of the disease, and comply with the doctor’s instructions to standardize the treatment.