Swelling of the left hand in the morning can be analyzed from the following points: First, caused by rheumatoid diseases, patients often have morning stiffness and activity disorders in addition to swollen hands, hand X-ray, rheumatoid factor, blood sedimentation, anti-chain O and other tests can assist in the diagnosis. Second, improper sleeping posture caused by, generally do not need special treatment, attention to rest after the gradual reduction of symptoms. Third, gout, patients mostly appear after drinking alcohol or eating seafood, into the blood, uric acid test can be clearly diagnosed. In the acute stage, oral uric acid-lowering drugs and symptomatic pain relief treatment are the mainstay, while diet control is the mainstay in normal times, and attention is paid to regular rechecking of uric acid index. In addition to swelling of the hand, it is often accompanied by local skin bruising and pain, which can be treated with local wound spray to help reduce swelling and pain and improve symptoms. Therefore, when the morning hand swelling must be taken seriously, timely hospital consultation to further clarify the cause of the swelling, timely targeted treatment to avoid delay.