Patients with hyperthyroidism, thyroid cancer before iodine 131 treatment and other conditions are recommended to eat non-iodized salt, and patients with other thyroid disorders generally have no special requirements. Hyperthyroidism is caused by too much thyroid hormone in the blood, and iodine is one of the raw materials for the synthesis of thyroid hormone, so it is not recommended to eat iodized salt on the choice of salt, which will promote the synthesis of thyroid hormone, and should choose non-iodized salt. In addition, patients with hyperthyroidism should also avoid eating iodine-rich foods, such as kelp, nori, etc. Thyroid cancer patients also need to eat non-iodized salt before undergoing iodine 131 test, otherwise it may affect the treatment effect. Patients with other thyroid diseases generally do not have special requirements for salt; patients with hypothyroidism need to avoid high-fat diets, as hypothyroidism may cause elevated blood lipids. Patients with thyroid-related diseases should actively cooperate with doctors for treatment and maintain a healthy diet.