Osteoarthritis of the interphalangeal joint can be treated by general therapy, physical therapy, medication and surgery. 1. General treatment: patients with interphalangeal joint osteoarthritis can reduce the flexion and extension activities of the interphalangeal joints to reduce the wear and tear of the joint surfaces and slow down the disease process of osteoarthritis. 2. Physical therapy: local hot compresses, massage, hydrotherapy and other ways can promote local blood circulation, reduce inflammatory reaction, so as to improve the symptoms of interphalangeal joint osteoarthritis. 3. Medication: non-steroidal anti-inflammatory drugs such as ibuprofen and celecoxib can be used to relieve pain; some drugs such as glucosamine sulfate capsule and chondroitin sulfate can be involved in the metabolism of cartilage and slow down cartilage degeneration. 4. Surgery: patients with severe deformity or obvious pain can be treated with surgery, which includes arthroplasty or osteotomy. Patients with osteoarthritis of the interphalangeal joints should go to the hospital in time and under the guidance of the doctor for regular treatment.