Survival of thyroid cancer is related to staging, surgical treatment modality, and postoperative combination therapy. Undifferentiated thyroid cancer has a poor outcome, with most dying within 1 year and a 5-year survival rate of between 5% and 15% after comprehensive treatment such as surgery. However, most thyroid cancers are differentiated and often have a better outcome and can survive for a long time. Even in patients with neck lymph node metastasis, the 5- and 10-year survival rates are 84.3% and 80.4%, respectively. The 5- and 10-year survival rates for patients after lymphatic node dissection in the neck were 91.4% and 82.2%, respectively. In the presence of lymph node metastasis, the ability of surgical treatment to completely clear the lymph nodes is the key to cure. After surgery, for some thyroid cancers with excessive malignancy, reasonable and appropriate continuation of radiotherapy also affects the cure rate.