The recurrence rate of papillary thyroid cancer after surgery is not significant, but recurrence is still possible. The postoperative recurrence rate of papillary thyroid cancer is relatively low in the overall probability of recurrence after cancer surgery. The factors affecting the recurrence rate of papillary thyroid cancer after surgery mainly include low early diagnosis rate and surgery without cure. 1. Early diagnosis rate: because the early symptoms of papillary thyroid cancer are not obvious, it is not easy to detect or diagnose the cancer by oneself in early stage, so when seeking medical treatment, most of the conditions are more serious and the scope and spread of cancerous tissues are large, which mostly affect the prognosis; those who are diagnosed and treated early have less chance of recurrence; 2. Surgical cure: ultrasound and other Imaging examination cannot accurately show the extent and metastasis of papillary thyroid cancer, so surgical excision may not be complete, causing cancer cells to be missed, which may cause recurrence later; if surgical excision of cancer tissues is more complete, usually the recurrence rate can be lower. In addition, factors such as tumor size, distribution of lymph nodes and degree of lymphatic infiltration are also related to postoperative recurrence of papillary thyroid cancer. If the tumor is already large when it is found, the degree of invasion to the surrounding area is obvious, and there are more hidden lesions of cancer, the recurrence rate of papillary thyroid cancer may increase after surgery. After papillary thyroid cancer surgery, according to the doctor’s assessment, combined treatment such as chemotherapy and radiotherapy should be carried out to completely remove cancer cells from the body. After treatment and discharge from the hospital, it is recommended to have a review after 3 months, and after that, follow-up reviews should be conducted every six months to detect recurrence and metastasis and treat them in time.