Thyroid hemisection generally refers to the removal of the lobes and isthmus lobes on one side of the thyroid gland. It is possible for thyroid cancer to recur after a thyroid hemicolectomy. Patients who need a hemithyroidectomy usually have thyroid cancer, hyperthyroidism, or an enlarged thyroid gland that is causing pressure symptoms. If recurrence is a concern, it is usually seen in patients who have undergone surgery for thyroid cancer. Thyroid cancer does not necessarily recur after thyroid hemicolectomy, but its probability of recurrence will be higher than that of patients who undergo total thyroidectomy. Therefore, patients after hemithyroidectomy should undergo regular checkups, which can help to find out whether there is recurrence or metastasis of thyroid cancer at an early stage. Patients after thyroid hemicolectomy are advised to standardize their treatment under the guidance of their doctors, and if they are worried about the risk of recurrence, they are advised to go to the hospital and ask their doctors to make a judgment.