The demand for nutrients increases significantly in hyperthyroid patients due to their hyper-metabolism. Therefore, diet is very important for patients with hyperthyroidism, and special attention should be paid to the reasonable combination of nutrients. The diet should be high in calories, protein, vitamins, fat and sodium, with at least 2400 kcal for men and 2000 kcal for women. Eat more high-calorie, high-protein, vitamin-rich foods, especially those rich in potassium and calcium. Young patients also need to eat more fatty foods and vitamin-rich fruits and vegetables. vitamins and inorganic salts can regulate physiological functions and improve body metabolism, especially vitamin B and vitamin C. Adequate calcium and iron should be supplemented to prevent deficiency. Since hyperthyroidism is caused by excessive secretion of thyroid hormone, which has a great relationship with iodine, the intake of iodine should be controlled and foods with high iodine content such as kelp, seaweed, nori, kombu, sea fish, sea shrimp and sea jelly skin should be prohibited. If necessary, iodized salt can be changed to non-iodized salt. Use cautiously or do not use warm supplements and recipes with high iodine content. Eat small and frequent meals and do not overeat. Eat less or no spicy food (such as chili, onion, ginger, garlic, etc.), try not to smoke or drink alcohol, and drink less or no strong tea, coffee and other excitatory drinks to avoid aggravating symptoms such as palpitations and hand tremors. Appropriate control of high-fiber foods. Hyperthyroid patients often have diarrhea, and excessive supply of fiber-rich foods can aggravate diarrhea.