Swelling of hands at night may be related to improper sleeping posture, cervical spine problems, rheumatoid arthritis, etc., which need to be analyzed specifically. 1. Improper sleeping posture: due to the body’s prolonged compression of one side of the limb, resulting in blood circulation disorders, a feeling of swelling on one side of the limb, can be restored after adjusting the sleeping posture. 2. Cervical spine disease: especially cervical spine keyboard protrusion, osteophytes and other problems, stimulation of the cervical nerve roots, blood vessels, spinal cord and other nocturnal swelling of the hands, but also numbness of the limbs, neck and shoulder pain and other symptoms. 3. Rheumatoid arthritis: this disease is mainly manifested as joint swelling, pain, and even activity limitation, etc., the symptoms often recurring, but the disease to the large joints are mainly involved, can also occur in the small joints, need to be differential diagnosis. If the swelling of the hands occurs frequently at night, it is recommended to consult a doctor in time to clarify the cause of the disease and then actively treat it, so as to avoid delaying the disease.