◆ The diet is mainly composed of multivitamins, high protein and high calories. It is not advisable to overeat cold food. ◆ Patients should combine static and dynamic activities and exercise properly. Get into the habit of defecating every day. Keep warm to avoid catching a cold. Diet should strengthen nutrition, but avoid eating cold products. ◆ If you are complicated with severe acute infection, severe mental symptoms, pleural effusion, ascites and pericardial effusion, intractable angina pectoris, heart failure and myxedema coma, you should be sent to a doctor immediately. (1) Appropriate iodine supplementation, without using goiter-causing substances. 1) Supplementary iodized salt: In China, potassium iodide with the concentration of 1g is generally used to prevent and treat goiter, which significantly reduces the incidence rate and is suitable for endemic goiter areas. In addition, pregnant women should pay more attention to the supplement of iodized salt to prevent future generations from suffering from cretinism due to iodine deficiency of their mothers. 2) Avoid using goiter substances: Avoid eating Chinese cabbage, cabbage, rape, cassava, walnuts, etc. To avoid goiter. (2) Sufficient protein: Only when the mass of protein per person per day exceeds 20G, can the human protein balance egg be maintained. Amino acids are the basic components of protein, and about 3% of protein is constantly updated every day. During hypothyroidism, the renewal rate of intestinal mucosa slows down, the secretion glands of digestive juice are affected, the enzyme activity decreases, and the general albumin decreases. Therefore, it is necessary to supplement essential amino acids and protein to improve the condition. (3) Restricting fat and high cholesterol diet: Patients with hypothyroidism are often accompanied by hyperlipidemia, which is more obvious in primary hypothyroidism, so fat diet should be restricted. The daily fat supply accounts for about 20% of the total calories, and the diet rich in cholesterol is restricted. (4) correct anemia and supplement rich vitamins: anemia patients should supplement iron-rich diet, vitamin B 12, such as animal liver and folic acid, and supplement liver preparations when necessary. (5) Dietary distribution: 1) Suitable food: For hypothyroidism caused by iodine deficiency, appropriate amount of kelp and laver should be selected, and iodine can be supplemented with iodized salt, iodine soy sauce, iodine eggs and bread. When cooking, it should be noted that iodized salt wood should be put into boiling oil to avoid iodine volatilization and reduce iodine concentration. Protein can choose eggs, milk, all kinds of meat and fish; Plant proteins can complement each other, such as various bean products and soybeans. Supplying animal liver can correct anemia and ensure the supply of various vegetables and fresh fruits. 2) Avoid eating: avoid all kinds of raw goiter substances, such as Chinese cabbage, cabbage, rape, cassava, walnuts and so on. Avoid foods rich in cholesterol, such as cream, animal brains and internal organs. Limit the use of high-fat foods, such as cooking oil, peanuts, walnuts, almonds, sesame paste, ham, pork belly and sweet cheese.