Thyroid cystic solid nodule grade 3, is a grade under ultrasound based on TIRADS. grade 3 is most likely a benign lesion, with a low likelihood of malignancy of less than 2%. Regular checkups are usually an option, and if compression or malignancy is present, surgery can be performed to remove the lesion. Grade 3 cystic solid thyroid nodules are very likely to be benign, so if the patient does not have other obvious symptoms such as compression, and thyroid function is not abnormal, no special treatment can be given for the time being, and regular checkups are sufficient. If the cystic solid thyroid nodule is too big and there is compression, such as compression of the recurrent laryngeal nerve, which leads to obvious symptoms, or if the thyroid gland is found to have the possibility of malignant changes by fine needle puncture, timely treatment is needed, and surgical treatment can be chosen, and the surgical methods are thyroidectomy and partial thyroidectomy. It is recommended that patients with grade 3 cystic solid thyroid nodules be treated under the guidance of a doctor who will choose the appropriate treatment according to their specific condition.