Thyroid cysts usually do not need medication, and the methods of treating thyroid cysts include puncture aspiration, surgery, local injection and so on. 1. Puncture and aspiration: the contents of the cyst can be aspirated under ultrasound guidance, which makes the cyst shrink, and this method is less traumatic and can be operated repeatedly. 2. Surgery: If the cyst increases rapidly or produces pressure symptoms, or if there is malignant transformation, it is necessary to consider thyroidectomy. 3. Local injection: local injection of tetracycline, dexamethasone, anhydrous ethanol and other drugs can make the cyst wall undergo aseptic necrosis, resulting in adhesion of the cyst wall and occlusion of the cyst cavity, which will ultimately play a therapeutic role. Most of the thyroid cysts are benign, and some of them can be absorbed automatically, so if the cysts are small and have no obvious clinical manifestations or signs of malignancy, regular checkups are sufficient and no special treatment is needed. Patients who have been diagnosed with thyroid cysts should ask their doctors to make a judgment based on their specific conditions and choose the appropriate treatment for them.