The swelling of one hand in the morning can be caused by the following reasons: first, cervical spondylosis, cervical spondylosis compression of nerve roots can be serious when there is a plant nerve dysfunction, which leads to swelling of the hand in the morning, then early examination of the cervical spine X-ray, CT, MRI to diagnose and treat. Second, rheumatic and rheumatoid diseases, these two diseases can also have the symptom of swelling of the hand in the morning, and early blood tests and X-rays of the hand should be taken for early diagnosis and treatment. Third, stenosing tenosynovitis, stenosing tenosynovitis can also appear in the morning when the finger swelling and stiffness, serious cases will have a popping sound and finger activity restrictions, then early to the specialist examination and examination to diagnose, early closed treatment or surgery.