Thyroid nodules usually grow below the laryngeal nodes, above the suprasternal fossa, in front of or on both sides of the trachea, with the following manifestations: 1. small nodules: they may not have any symptoms and are usually undetectable, and patients often find nodules in the thyroid gland during routine annual physical examinations; 2. large nodules: there may be symptoms, such as pressure in the neck and a feeling of foreign body or obstruction in swallowing. If the nodule is large, it may affect the patient’s appearance, swallowing function and respiratory function; 3. In addition to the presence of thyroid nodes in front of the trachea, a hard lump may also be felt in the neck, suggesting the presence of lymph node metastasis at this time.