Most pineal tumors are malignant and a small percentage are benign. Pineal tumors are occupying lesions that grow in the pineal region. Pineal tumors can show symptoms such as precocious puberty, headache and vomiting, inability to list both eyes, motor nerve palsy, and lethargy. They are mainly divided into benign and malignant, with malignant being the most common. 1. Malignant tumors: about 75~80% of pineal tumors are malignant tumors, such as germ cell carcinoma, certain gliomas, pineal cell tumors and so on. 2. Benign tumors: for example, pinealocytoma, dermoid cyst, teratoma, etc. These pineal tumors are benign tumors. In order to understand the condition, patients should do the examination of tumor markers, cerebrospinal fluid exfoliative cytology examination, CT examination and so on. Patients with pineal tumors should actively seek medical attention and not self-medicate to avoid adverse outcomes.