Teratoma is a type of ovarian cyst, and there is a chance of recurrence after treatment. Clinically, once the recurrence of a teratoma is suspected, it is mostly recommended that the patient undergo surgery again to remove the recurrent teratoma and conduct a postoperative pathological examination to assess whether there is a tendency for the teratoma to become malignant. Further treatment plans are formulated based on the results of the postoperative pathology. After discovering the recurrence of a teratoma, there is no need to panic excessively; it is sufficient to seek medical attention promptly.