Rheumatoid arthritis patients’ blood routine may generally show abnormalities such as white blood cell changes, platelet elevation and hemoglobin reduction. 1. Changes in white blood cells: In the acute stage of the disease, the values of white blood cells and neutrophils in the blood routine may increase. In patients with rheumatoid arthritis after using immunosuppressive drugs, the immune system is suppressed, and a decrease in white blood cells may occur. 2. Elevated platelets: In patients with rheumatoid arthritis, platelets may be elevated during the active phase of the disease. 3. Decreased hemoglobin: Patients with long-term rheumatoid arthritis may have decreased hemoglobin, which may cause mild to moderate anemia and is common in normocytic hypochromic patients, mostly related to the degree of disease activity. It is recommended that rheumatoid arthritis patients have regular blood tests so that doctors can understand the changes in their condition and take appropriate treatment measures to improve their condition.