Smoking is not recommended for thyroid nodules. Smoking is not a healthy habit, especially for patients with thyroid nodules, as it increases the incidence of thyroid nodules. There are now studies proving that smoking is one of the risk factors for the development of thyroid nodules. The detection rate of thyroid nodules in smokers is higher than the detection rate of thyroid nodules in non-smokers. Thyroid nodule patients should choose a healthy lifestyle, diet should be light, intake of high-protein, high-vitamin food, nutritional balance. Eat more fresh vegetables and fruits such as celery and kiwi. Thyroid nodule patients with symptoms of hyperthyroidism should minimize the consumption of foods high in iodine, such as iodized salt, kelp, seafood, etc. Iodine is the synthetic raw material of thyroid hormones, and foods high in iodine will lead to increased synthesis of thyroid hormones in the body and aggravate the condition. Maintaining a low-fat, low-salt diet, plus moderate exercise, is more conducive to the condition. It is recommended that patients with thyroid nodules seek prompt medical attention.