Teratoma is a disease that forms during embryonic development and is not a very serious disease. The exact cause of teratoma is not known. At present, clinical medicine considers that it is mainly related to the abnormal differentiation of human embryonic germ cells and other factors. It is recommended that further examination in the regular hospital, according to the specific circumstances of the individual, under the guidance of the doctor for treatment. Teratoma is divided into two kinds of benign and malignant tumors. Teratoma can occur in intracranial, gastric, testicular, ovarian and other parts of the body, there is no obvious clinical manifestation in the early stage, it is not easy to be detected, and most of them are found during health checkups. Clinical examination such as CT, X-ray, tumor marker and ultrasound can be taken to confirm the location and nature of teratoma. Surgery is the main treatment, and after surgery, chemotherapy is carried out under the guidance of doctors according to individual conditions to prevent recurrence.