Regular follow-up is sufficient for benign thyroid nodules; if the nodule is enlarged, has pressure symptoms or has a tendency to become malignant, surgery may be required under the guidance of a physician; if the thyroid nodule has caused thyroid function abnormalities, antithyroid medication or levothyroxine may be required for treatment. When thyroid nodules are found, the first step is to determine the nature of the thyroid nodules, which can be based on the classification results of thyroid ultrasound. In the case of malignant thyroid nodules, fine needle aspiration of the thyroid gland is required to clarify the nature of the thyroid nodule. If the thyroid nodule causes hyperthyroidism, it may need to be treated with antithyroid drugs such as methimazole or propylthiouracil; if the thyroid nodule causes hypothyroidism, it may need to be treated with levothyroxine. When thyroid nodules are detected, it is necessary to consult a medical professional for diagnosis and treatment.