Pain in the middle joints of the fingers may be caused by rheumatoid arthritis, gout, osteoarthritis and other factors. 1. Rheumatoid arthritis: Rheumatoid arthritis can involve the surrounding joints including the finger joints and cause joint swelling, morning stiffness, joint pain and other symptoms, so the patient’s middle finger joint pain may be caused by rheumatoid arthritis. 2. Gout: gout is a metabolic disease, gout attack can cause fingers, toes, knees, ankles and other joints, joint pain and swelling symptoms, the pain is progressively increasing, can be relieved in a few days to 2 weeks. 3. Osteoarthritis: Osteoarthritis is a chronic joint disease characterized by degenerative changes in the articular cartilage, followed by synovial membrane hyperplasia and bone regrowth, which can cause joint pain, joint pain and joint stiffness and other symptoms. The pain in the middle joints of the fingers may have other causes, and it is recommended that patients go to the rheumatology and immunology departments of regular hospitals to further clarify the causes of the disease and follow the doctor’s instructions for standardized treatment.