Patients with rheumatoid arthritis can consume amaranth in moderation. Rheumatoid arthritis is a chronic, systemic autoimmune disease with erosive, symmetrical polyarthritis as the main clinical manifestation. The exact pathogenesis is unknown. The basic pathological changes are chronic inflammation of the synovial membrane, formation of vascular cataracts, and gradual destruction of articular cartilage and bone, which ultimately leads to joint deformity and loss of function. Patients with rheumatoid arthritis usually have no obvious dietary contraindications, and are usually recommended to have a low-salt, low-fat and light diet with balanced nutrition. Amaranth is rich in dihydroxyethylamine, malic acid, glucose, calcium, phosphorus, iron, as well as vitamin E, carotene, vitamin B, vitamin C, omega-3 fatty acids and other nutrients, which can provide certain nutrients for the body when consumed in moderation. Therefore, patients with rheumatoid arthritis can consume amaranth, but it is not recommended to eat more. It is recommended that rheumatoid arthritis patients should seek early medical treatment and standardize the treatment under the guidance of doctors, do not blindly self-medication, so as not to aggravate the condition.