Rheumatoid arthritis can be self-tested by reviewing the medical history, analyzing the causative factors, symmetry of joint symptoms and perfecting laboratory tests. If you are highly suspected of having rheumatoid arthritis, you should go to the hospital in time for further diagnosis and treatment, so as to minimize the rate of disability. 1. Review of medical history: rheumatoid arthritis is characterized by small joint lesions, such as those occurring in the proximal interphalangeal joints, metacarpophalangeal joints and carpal joints, as well as metatarsophalangeal joints, metacarpophalangeal joints and knee joints in the lower limbs, rheumatoid arthritis should be considered as the first step. 2. Analysis of triggers: rheumatoid arthritis usually has no obvious triggers, and other arthritis such as gout usually has high purine diet and other triggers. 3. Symmetry of joint symptoms: joint damage is generally symmetrical, if it occurs in the hand is generally bilateral small joints of the hand symmetrical lesions. 4. Laboratory tests: The diagnosis of rheumatoid arthritis can be assisted by perfecting the measurement of rheumatoid factor, anti-cyclic citrullinated peptide antibody, blood sedimentation, C-reactive protein, as well as the necessary X-ray and ultrasound examination of muscles and bones. If the above symptoms occur, it is recommended to go to the hospital in time for early and regular treatment.