Finger joint pain and swelling mostly refers to the pain and swelling of the metacarpophalangeal joints, and the common causes are trauma, rheumatoid arthritis, gout and so on. 1. Trauma: most have a history of finger injuries, due to the role of the finger by violence, metacarpal fracture occurs involving the metacarpophalangeal joints, can appear in the metacarpophalangeal joints pain, swelling, difficulty in movement and other symptoms. 2. Rheumatoid arthritis: an autoimmune disease, due to immune cells attacking the articular cartilage, causing bone destruction, but also appear in the metacarpophalangeal joint pain, mostly symmetrical, both hands have pain. 3. Gout: due to urate deposition in the metacarpophalangeal joints, causing an inflammatory reaction, can also appear in the metacarpophalangeal joint pain, swelling, fever and other symptoms. The causes of pain and swelling of the metacarpophalangeal joints are many, and may also be related to diseases such as onychomycosis, chondroma, etc. If the symptoms continue to be unrelieved, it is recommended to consult a doctor in time to clarify the cause of the disease, and then carry out targeted treatment.