Most of us are still unfamiliar with thyroid nodules, which are lumps in the thyroid gland caused by a variety of etiologic factors, and the nodules can move up and down with the thyroid gland in response to swallowing movements. It is a very common disease, especially among middle-aged women. However, benign nodules account for the majority of cases and malignant nodules account for less than 1%. Therefore, we should not be alarmed when we find a thyroid nodule during a checkup, but we should not ignore it either, after all, it has a certain tendency to become cancerous. What we need to do is to protect the thyroid nodules from becoming cancerous. The following work must be done: First, pay attention to diet, usually need to eat more high-calorie high-protein food, should include meat, eggs and milk, soy products. At the same time, it is necessary to supplement rich vitamins and fibers, and can often eat fresh fruits and vegetables rich in vitamins, such as green seasonal vegetables, apples, peaches, dates, lemons, coconuts, mangoes, figs, bananas, persimmons and so on. Second, pay special attention to eat more seaweed: seaweed is rich in iodine, the thyroid gland has the ability to absorb iodine, and at the same time to ensure the supply of water on the body. Third, quit smoking and alcohol, at the same time to avoid stimulants, too spicy, too salty, too sweet, coffee, tea, nicotine and so on. Fourth, improve the living habits, need to do a balanced diet, moderate exercise, sleep enough. Thyroid nodule patients advocate low iodine, low sodium diet. Fifth, maintain a good state of mind, optimistic attitude towards life, emotions are very important to reduce the occurrence of thyroid disease. Mental and emotional factors also easily lead to hormone secretion disorders, leading to the occurrence of malignant tumors. If you can do all these, even if thyroid nodules have malignant tendency, in most cases, they will not develop into cancer.