The rate of thyroid cancer progression is related to thyroid cancer staging. Thyroid cancer has a slower progression rate compared to other cancers. Pathologically, thyroid cancer is divided into papillary carcinoma, follicular carcinoma, medullary carcinoma and undifferentiated carcinoma. Papillary carcinoma is less malignant, grows more slowly and has a relatively good prognosis. Some American scholars analyzed the data of papillary thyroid carcinoma with different stages and different surgical methods, and showed that the five-year survival rate was over 90%, and even for patients with lymph node metastasis in the neck, there was no statistical difference in the survival rate. A domestic study of 1173 patients with papillary thyroid cancer over a period of up to 40 years found that the tumor-free survival rates of ten and twenty years were 83.5% and 71.4%, respectively. Follicular carcinoma and medullary carcinoma are mostly slow-growing and have a worse prognosis than papillary carcinoma. However, undifferentiated carcinoma is a malignant tumor with very aggressive, rapid growth and metastasis, and very poor prognosis, with a median survival of only 3-7 months from the time of diagnosis. Therefore, the rate of thyroid cancer development depends on the staging, papillary carcinoma has the best prognosis and undifferentiated carcinoma has the worst prognosis.