Thyroid cystic solid nodules category 3 have a less than 2% risk of malignancy and are generally not considered serious. According to the TI-RADS classification, thyroid nodules are categorized into 6 grades, and the higher the grade, the higher the risk of thyroid cancer. Thyroid nodules graded at grade 3 or below have a higher probability of being benign, grade 4 or above may be malignant, and grade 6 can be determined to be malignant. For thyroid nodules without obvious symptoms, regular follow-up is sufficient, and if necessary, thyroid puncture biopsy is needed to clarify the nature of the thyroid nodule to help further develop treatment measures. Patients diagnosed with Class 3 cystic solid thyroid nodules are advised to go to the hospital and ask the doctor to make a judgment, rather than making a blind judgment on their own.