Hashimoto’s hypothyroidism generally refers to hypothyroidism caused by Hashimoto’s thyroiditis. Pregnant women with Hashimoto’s hypothyroidism generally do not need iodine supplementation. It is advisable to have a “low iodine diet”, i.e., limit the consumption of iodized salt to foods high in iodine, such as seaweed and seaweed. Patients with hypothyroidism caused by Hashimoto’s thyroiditis do not need iodine supplementation in their diet. Limiting iodine intake may help to stop the progression of autoimmune destruction of the thyroid, so excessive intake of iodine-rich foods, such as seafood, kelp, seaweed, etc., should be avoided. In daily life, patients with hypothyroidism should pay attention to their diet, such as white radish, cabbage and other cruciferous vegetables, can be cooked and eaten, avoid dipping sauce; cream, animal offal and other high-fat, high-cholesterol foods should be avoided as much as possible. Pregnant women diagnosed with Hashimoto’s thyroiditis combined with hypothyroidism should actively cooperate with their doctors for treatment.