People with connective tissue disease can eat fish in moderation. Connective tissue diseases are autoimmune diseases, including rheumatoid arthritis, systemic lupus erythematosus, dry syndrome, myositis and other diseases. Connective tissue diseases generally have a systemic inflammatory response, disease activity when the body is in the inflammatory chronic consumption state. Fish has protein, trace elements, etc., so eating fish in moderation can increase nutrient intake, enhance resistance, for disease recovery is a certain help. However, it is not recommended for patients who are allergic to fish. At present, there is no definite data showing that eating fish is related to the onset and activity of connective tissue disease. Therefore, if there is no fish allergy, it is possible to eat fish in moderation. Patients with connective tissue disease are advised to consult the rheumatology and immunology department of the hospital in a timely manner, follow the doctor’s instructions for treatment, and consult a professional doctor for dietary advice if necessary.