Thyroid cysts refer to fluid-filled sac-like formations or lumps found in the thyroid, generally round in shape, typically painless or only mildly painful, and move up and down with swallowing. Most are solitary nodules, with multiple nodules being less common. Most thyroid cysts do not exhibit obvious clinical symptoms unless the cyst is large or there is bleeding within the cyst, which may lead to symptoms of compression such as pain, difficulty swallowing, difficulty breathing, and hoarseness. Therefore, the treatment of thyroid cysts primarily involves understanding their nature. If a thyroid cyst is malignant, prompt surgical removal should be undertaken; if benign, generally it is sufficient to monitor the cyst through follow-up observations.