Medullary thyroid cancer may not necessarily recur after surgery, but needs to be analyzed in the context of staging and late care. Medullary thyroid cancer is a type of thyroid cancer, which is clinically treated by surgery, radiotherapy and chemotherapy, and there is a certain chance of recurrence in the late stage, but it is not 100%, which needs to be analyzed by combining with the patient’s stage, late care and mood, etc. If there is no recurrence in five years, it will be clinically cured. Generally speaking, the earlier radical surgery is performed for medullary thyroid cancer, the easier it is to remove the cancer cells completely, and the recurrence rate will be lower in the later stage; if the surgery is performed too late, it is difficult to remove the tumor tissues completely, and metastasis may occur, so the chance of recurrence is relatively higher, and in order to reduce the rate of recurrence in the later stage, the patient will undergo cycles of radiotherapy, chemotherapy and other treatments after the surgery. Regardless of the treatment, medullary thyroid cancer may recur in the late stage, and regular checkups are needed according to the doctor’s instructions.