Immature teratomas are tumors of embryonic tissue and are classified as grades 0 to 3 depending on the proportion of young embryonic tissue; grade 0 is all mature tissue, grade 1 has a small amount of immature tissue, grade 2 has more immature tissue, and grade 3 has the most immature tissue; the higher the proportion of immature tissue, the more severe the condition. Immature teratomas are germ cell malignancies that occur most often in the young female population. When a patient has a grade 2 immature teratoma, there are usually no obvious symptoms in the early stages of the disease, and as the disease progresses, it may cause damage to several areas, including the digestive tract and the ureter. If patients with grade 2 immature teratoma do not receive timely treatment, the cancer cells may also metastasize to other parts of the body, easily causing abdominal infections and abnormal weight loss, which has a more serious impact on the body. Patients with grade 2 immature teratoma should go to the hospital in time, and can choose various methods such as surgical resection and chemotherapy for control.