Dietary iodine has the greatest impact on the thyroid gland, and insufficient or excessive iodine intake can cause thyroid pathology. Eat foods high in iodine, such as kelp, seaweed, hairy vegetables, sea shaoxing, sea cucumber, dried scallops, lobster, turtle, and so on. Avoid stimulation to try to avoid any possible stimulation, do not eat spicy stimulating food, do not smoke and drink, but also do not often irritable, angry, etc., to avoid the endocrine disruption caused by poor mood. Exercise should be more exercise, especially long-term office white-collar workers, more need to exercise regularly, more exercise can improve the body’s immunity, enhance physical fitness, for the prevention of any disease are good. Overwork will increase the burden on the thyroid gland and reduce the body’s immunity. In the long run the thyroid gland is in an unstable state, and is prone to lesions when it is affected by external factors, such as chemical stimulation or invasion by germs and viruses. Therefore, work and rest, maintain a healthy lifestyle and work style, is also an effective way to prevent thyroid disease. Avoid depression, anger, impatience, worry, maintain a cheerful mood, optimistic attitude towards life, can significantly reduce the occurrence of thyroid disease.