Thyroid cysts generally do not show obvious symptoms. When a cyst significantly enlarges or internal bleeding occurs, compressive symptoms or pain may appear. Thyroid cysts can lead to hyperthyroidism, and if persistent, may eventually cause hypothyroidism. Therefore, it is necessary to regularly monitor thyroid function to understand the status of thyroid activity. The treatment of thyroid cysts primarily involves distinguishing whether they are malignant. For thyroid cysts suspected to be malignant, surgical treatment is required. Generally, thyroid cysts are benign and only require regular observation and follow-up.