Most of the middle finger pain is considered to be caused by trauma, infection, bone tumor, interphalangeal arthritis, stenosing tenosynovitis and other factors. 1. Trauma: Trauma can lead to phalangeal fracture or soft tissue injury, inflammatory factor exudation, local pressure increase, blood circulation obstacle, middle finger pain, swelling, impaired mobility and other symptoms. 2. Infection: bacterial infection can lead to onychomycosis, purulent dactylitis, osteomyelitis, etc. Local redness, swelling, heat and pain can be manifested as local inflammatory exudation, pus accumulation, and necrosis of the finger bone. 3. Bone tumor: Bone tumor will destroy the finger bone, local bone abnormally proliferates, pressure increases, and the symptoms of finger pain appear. 4. Interphalangeal arthritis: such as osteoarthritis or rheumatoid arthritis, etc., which can lead to cartilage damage in the finger joints, resulting in pain in the fingers, accompanied by joint enlargement. 5. Stenosing tenosynovitis: Chronic strain and cold and other factors can lead to friction at the entrance of tendon tendon sheath, inflammatory reaction, tendon tendon sheath hyperplasia, stenosis, pain and numbness due to the jamming of the finger when moving. There are other causes of pain in the middle finger, and it is recommended that the patient actively consult a doctor to identify the cause and then carry out targeted treatment.