Thyroid cysts generally do not require special treatment, as most thyroid cysts are quite small, and even larger ones usually do not cause significant clinical symptoms. However, treatment may be necessary in some cases, such as when a thyroid cyst becomes large enough to cause compressive symptoms, leading to difficulty breathing or swallowing, in which case puncture or surgery might be considered. On the other hand, if a thyroid cyst is accompanied by abnormalities in thyroid function, it is important to assess whether there is hyperthyroidism or hypothyroidism and treat according to the specific functional state. Additionally, in a small number of cases where a thyroid cyst may have a tendency to worsen, a puncture biopsy is needed to make a diagnosis, and if confirmed, surgery and appropriate treatment should be carried out.