The purpose of nutritional treatment is to give a certain amount of iodine and avoid the use of foods that may cause goiter, to ensure the supply of protein, and to improve and correct the function of the thyroid gland. 1, supplement the appropriate amount of iodine and avoid the use of food that may cause goiter (1) supplemental iodized salt: the domestic usually use 1/50000~1/10000 iodized salt concentration, i.e., every 2~10kg of salt plus 1g of potassium iodide, used to prevent and control goiter, so that the morbidity rate is significantly reduced, applicable to the endemic areas of endemic goiter. In addition, women in childbearing period should pay more attention to the supplementation of iodized salt, preventing and controlling iodine deficiency in mother’s body, which leads to cretinism in offspring. (2) Avoid using goiter-causing foods: avoid choosing cabbage, bok choy, rape, cassava, walnuts and other foods to avoid goiter. Hanzhong Hospital of Traditional Chinese Medicine internal medicine Tao Xikai 2, the supply of adequate protein per person per day to supply the amount of high-quality protein should be at least more than 20g, in order to maintain a normal body protein balance, amino acids are the basic components of the protein, about 3% of the protein is constantly updated every day, hypothyroidism due to the slowing down of the renewal rate of the small intestinal mucosa, digestive secretion of the gland is affected by the enzyme activity is reduced. Once there is a decrease in clear protein, essential amino acids should be supplemented to supply sufficient protein to improve the condition.3. Limit fat and cholesterol-rich dietsHyperlipidemia is often found in patients with hypothyroidism, and this is more obvious in primary hypothyroidism, so the amount of fat supply should be limited. Daily fat should account for about 20% of the total energy, and limit the intake of high cholesterol foods. 4, correct anemia in patients with anemia should be supplemented with iron-rich diets, and the supply of vitamins. Mainly supplement vitamin B12, such as animal liver. If necessary, it should also supply folic acid and iron preparations, etc. 5, dietary preparation (1) appropriate food: due to iodine deficiency caused by hypothyroidism, need to choose the right amount of kelp, seaweed, iodized salt, iodized soy sauce and bread iodized. When stir-frying, it should be noted that iodized salt should not be put into boiling oil, so as not to volatilize iodine and increase iodine loss. Protein supplementation can choose eggs, dairy, meat, fish, etc., plant proteins and animal proteins have complementary effects; a variety of soybean products, soybeans, etc., the supply of animal liver can correct anemia, but also to ensure the supply of a variety of vegetables and fresh fruit. (2) Avoid selecting foods: Avoid goiter-causing substances, such as cabbage, bok choy, oilseed rape, cassava, walnuts and other foods, and avoid cholesterol-rich foods, such as egg yolks, cream, animal brain marrow and offal. Limit the use of high-fat foods, such as cooking oil, peanut rice, walnuts, almonds, sesame paste, ham, pancetta and cheese.