The thyroid gland is located in front of the neck, below the laryngeal nodes and on both sides of the trachea, and is an important endocrine organ of the human body. In China, with the development of economy, the speed of life, the change of ecological environment and the difference of individual immune function, there is a trend of thyroid diseases increasing in recent years. The higher the level of estrogen in the body, the more likely it is to get thyroid cancer. The main culprits of thyroid cancer include radiation used for radiotherapy, natural sources of radiation, and radiation from high voltage power lines. Firstly, people should be aware of the need for protection; minimize exposure to radioactive materials. People with high risk of thyroid cancer, such as white-collar women, those with family history of thyroid cancer, and those who often consume seafood, should have at least one medical check-up every year. Due to the improved level of ultrasound examination, thyroid cancer of about 1 mm can be detected, so regular annual check-ups of the thyroid gland can lead to early detection and treatment of thyroid cancer. Secondly, thyroid gland cells have a strong ability to take in iodine, but like other organs, the thyroid gland declines with age, so if you consume too much iodine, it will increase the burden on the thyroid gland and make it susceptible to thyroid disease. Therefore, elderly people should pay attention to the moderate amount of iodine intake and try to consume light foods with high iodine content, such as seafood like kelp and scallops. Thirdly, if you suffer from thyroid cancer, don’t panic, but be optimistic and actively treat it, most patients can be cured after treatment. Most patients can be cured after treatment. Especially for older people, do not lose confidence because of cancer. A patient I treated recently, who was already in her 70s, had thyroid cancer and metastasis at that time, and her condition was quite serious. I also remind that if you suffer from thyroid disease, you should go to a regular hospital and do not delay the treatment.