Swollen finger joints and painful bending are usually caused by pathological factors, such as tendovaginitis, infection, osteoarthritis, rheumatoid arthritis, gout and trauma. It is recommended that patients promptly seek medical attention to clarify the diagnosis and then carry out the appropriate treatment.1. Tenosynovitis: can be manifested as painful finger flexion, joint swelling, sometimes accompanied by a popping sound, need to pay attention to rest, can take oral non-steroidal anti-inflammatory drugs to relieve pain symptoms, such as ibuprofen extended-release capsules, can also be closed painful injection, the application of prednisolone acetate and lidocaine hydrochloride. For patients with popping and limited flexion and extension activities, it is necessary to perform tenotomy or partial resection of the tendon sheath; 2. Infection: If the finger is inadvertently broken during daily work and life, improper care may lead to infection, which may manifest as joint redness, pain, fever, and even purulent discharge, so swelling of the finger joint and bending is very painful does not exclude the case of infection. Usually need to apply iodophor for disinfection, can take purulent secretions to do bacterial culture and drug sensitivity test, according to the results of the selection of effective antibiotics to control infection, if necessary, also need to be incised and drained; 3, osteoarthritis: if the finger osteoarthritis, will be manifested as joint swelling, bending very painful, you can take oral non-steroidal anti-inflammatory drugs and nutritional cartilage drugs for treatment, such as ibuprofen extended-release capsules, and Glucosamine hydrochloride, etc., and need less activity, pay attention to rest and warmth; 4, rheumatoid arthritis: if patients have rheumatoid arthritis, can be in the finger onset, manifested as joint swelling, bending pain, can be accompanied by morning stiffness, usually need to take oral non-steroidal anti-inflammatory drugs and anti-rheumatic drugs for treatment, such as ibuprofen extended-release capsules, Leflunomide, etc., and need to reduce the local stimulation, usually need to 5, gout: If you often eat a high purine diet, coupled with abnormal purine metabolism, may lead to gout, acute attacks will lead to swelling, bending pain in the finger joints, and there will be redness, fever and other symptoms, you can use colchicine, indomethacin, allopurinol and other drugs for treatment, avoid eating animal offal, soy foods, seafood and beer; 6, trauma: If Finger accidental strains, bruises, etc., can lead to soft tissue or bone damage, resulting in finger joint swelling, bending pain, the need for strict protection brake, local cold compresses. In the case of joint dislocation or fracture, it is necessary to actively carry out manual reset or incision reset.