Finger joint pain mainly considers the following situations: First, local injury leads to pain and swelling of a single joint, generally with a clear history of external injury, post-injury pain, joint capsule tearing and proliferation and edema. The second is rheumatoid arthritis, which is also very common in clinic, but the patient's performance is not a single joint, but multiple and symmetrical arthritis. Patients often have stiff fingers after getting up in the morning, also known as morning stiffness, and rheumatoid factor is positive. Thirdly, rheumatoid arthritis, which is an immune system disease, is mainly due to the strengthening of the immune system caused by streptococcus infection, and the accumulation of immune complexes in joints, mainly involving the joints of the big joints and hands, showing wandering and periodic arthritis. Fourth, hemophilia arthritis, which is common in hemophilia patients, is caused by repeated bleeding of synovium.