Rheumatoid arthritis (RA) is a chronic, systemic, inflammatory autoimmune disorder of unknown etiology that primarily involves synovial joints. The disease usually progresses from the periphery to more proximal joints and results in significant locomotor disability in patients who do not fully respond to treatment. Involvement of organs not considered part of the musculoskeletal system occurs in about 40 percent of patients with RA over a lifetime of disease. The treatment of rheumatoid arthritis is directed toward the control of synovitis and the prevention of joint injury. In this case, a forty-six year-old female suffered from rheumatoid arthritis of which rheumatoid factors (RF) over 300 IU in 2012. In chinese medicine treatment strategies, we based on theory of latent evil, which induced impediment, and modem research and experience, we clear heat and disinhibit dampness, while we support right in order to dispel hidden evil. After four years treatment, in 2016, the RF value drops enormously to 33 IU. We demonstrated the experience in this case report for clinical reference and application.