The topic of iodine supplementation has the following views, excerpts are as follows, for reference only 1, non-iodine-deficient areas of residents do not need to consume iodized salt. Like some counties in Shandong Heze area, belonging to the high iodine area, has canceled the mandatory iodine supplementation; there are seafood-based diet of fishermen, according to calculations, the daily intake of sea fish more than 750 grams of the population, there is no need to supplement iodine. 2, hyperthyroidism patients do not need to consume iodized salt, because iodine supplementation will increase the synthesis of thyroid hormones, exacerbating the condition. 3, thyroiditis (Hashimoto’s disease) patients do not consume iodized salt, iodine supplementation will aggravate the symptoms of inflammation. 4, thyroid tumor patients, about the relationship between thyroid cancer and iodine nutrition level, the current medical research is not clear. Therefore, patients with thyroid cancer should be more cautious in consuming iodized salt or not, and follow the doctor’s advice in combination with their conditions. 5, hypothyroid patients (hypothyroidism), for this group of people need to make up some, there is also controversy, because the causative factors of hypothyroidism is diverse, can not be generalized. 6, other thyroid disease patients, usually think that only goiter patients need iodine supplementation, but in fact, iodine deficiency and iodine overdose can induce thyroid disease, so it is still necessary to combine with the condition and their own iodine nutritional status, and make choices under the guidance of the doctor. 7. Pregnant women and lactating women with thyroid disease, this is a tricky issue, the iodine nutrition level is closely related to the intellectual development level of infants and young children, so it is necessary to follow the doctor’s advice in combination with the individual situation, or take the iodine supplementation for lactating infants and young children individually.