There are many forms of rheumatoid arthritis, including the insidious type (chronic gradual onset process), the acute type, and the intermediate type, with initial symptoms of joint pain, joint swelling, contralateral changes in the joints, morning stiffness, fever, and general discomfort. The criteria for the diagnosis of rheumatoid arthritis are: morning stiffness for at least 1 hour (6 weeks), swelling of 3 or more joints (6 weeks), swelling of the wrist, metacarpophalangeal or proximal interphalangeal joints (6 weeks), symmetrical arthrosis (6 weeks), subcutaneous nodules, hand x-ray changes, and positive rheumatoid factor (titer >1:32). Any 4 of the above criteria are sufficient to determine rheumatoid arthritis. Rheumatoid arthritis progresses rapidly in a significant proportion of patients, and if left untreated, bone and joint erosion and loss of joint function can occur within 1-2 years, resulting in irreversible damage. Therefore, early use of drugs that can prevent the development of the disease is necessary to reduce bone destruction and prevent further development of the disease. In addition to drugs, another method is arthroscopic removal of the affected synovial membrane. Since the synovial membrane is responsible for the secretion of joint damage in rheumatoid arthritis, early removal of the synovial membrane is effective in the treatment of rheumatoid arthritis, as it can cut off the continued destruction of joint cartilage by the synovial membrane secretion, thus achieving the goal of treating rheumatoid arthritis, and the earlier the treatment, the better the effect. Loss of joint function.