Thyroid gland is an important organ of human body, which plays an important role in the secretion balance in the body. There are many foods that are good for thyroid, such as mustard, celery and kiwi fruit. These foods have detumescence and anti-inflammatory effects, and can protect the thyroid gland from swelling and infection. You can also eat more mushrooms, fungus, walnuts and fresh fruits. These foods can improve the body's immunity, and the improvement of immunity can help the thyroid to resist adverse effects. You can also eat more seafood such as kelp, seaweed, seashells and lobsters. These foods are rich in iodine, which can protect the thyroid gland and avoid the occurrence of big neck disease easily caused by iodine deficiency in thyroid gland. There are many foods to protect the thyroid gland. If eaten at will, it may irritate and harm the thyroid gland and easily lead to thyroid diseases. People who are usually worried about thyroid diseases need to pay more attention to their diet.