If it is caused by stenosing tenosynovitis or tenosynovial cyst, you need to go to orthopedics; if it is caused by arthritis, you need to go to rheumatology; if it is caused by osteochondroma, you need to go to orthopedics and oncology; and if it is caused by common warts, you need to go to dermatology. 1. Orthopedics: when there are stenosing tenosynovitis and tenosynovial cysts in the finger joints, there may be hard lumps in the finger joints, accompanied by localized pain and dysfunction of movement, so it is necessary to consult orthopedics to take appropriate treatment measures and methods. 2. Rheumatology: when arthritis occurs in finger joints, it can cause local bursal hernia, hard lumps in finger joints, accompanied by redness, swelling, pain and dysfunction of joints, which need to be treated in Rheumatology and Immunology Department. 3. Oncology: when bone tumors appear in finger joints, hard lumps may appear in finger joints, and may be accompanied by pain and activity dysfunction, which need to consult orthopedics and oncology department for corresponding treatment measures and methods. 4. Dermatology: when common warts occur in the joints of the fingers, there may be hard bumps on the joints of the fingers, which are usually painless and spreadable, and need to go to the dermatology department of the hospital to take appropriate treatment measures and methods. It is recommended that you need to go to the hospital, clear diagnosis of the cause of the targeted treatment, you can not just randomly use drugs.