You can get thyroid cancer even if your thyroid function is normal. In clinical work, we often find that thyroid cancer patients have no abnormal changes in thyroid function, and many of them have normal thyroid function, therefore, we cannot determine whether you have thyroid cancer by reviewing thyroid function. In order to diagnose thyroid cancer at an early stage, first of all, we must raise the awareness of all the people and have a clear understanding of thyroid cancer, and regularly review thyroid ultrasound. At present, ultrasound is very accurate in diagnosing thyroid cancer, especially the elasticity score can be a good guide for early microscopic thyroid cancer. Therefore, it is important to perform color ultrasound exploration of the thyroid gland even when the thyroid function is normal on review. If abnormal manifestations are detected, it is important to pay high attention to it and early surgery can improve the survival and prognosis of thyroid cancer.