Thyroid diseases include hyperthyroidism, hypothyroidism, thyroid nodules, etc. The clinical manifestations of different diseases, for example, hyperthyroidism will have high metabolic state, hypothyroidism will have low metabolic state, etc.; different diseases should be targeted treatment under the guidance of doctors, such as medication, surgical treatment and so on. 1. Hypothyroidism: there may be symptoms of low metabolic state such as bradycardia, fatigue, weight gain, fear of cold and so on. Patients with hypothyroidism are mainly treated with medication, and can usually take levothyroxine sodium tablets as prescribed by the doctor. 2. Hyperthyroidism: there may be palpitations (rapid heartbeat, often accompanied by panic), fear of heat, sweating, weight loss, irritability and other symptoms of high metabolic state, the treatment includes medication (commonly used medications include methimazole, propoxythiazole, etc.), iodine radiation therapy and surgical treatment. 3. Thyroid nodules: benign thyroid nodules with normal thyroid function and no obvious symptoms usually do not require treatment; if the nodules are large enough to produce pressure symptoms (such as dyspnea, dysphagia, etc.), or if they are pathologically confirmed to be malignant, surgery is often required. Patients with thyroid disease should cooperate with their doctors for active treatment.