The concept of malignant brain tumor is broad and there are various classifications. The number of years of survival after surgery depends on the type of brain tumor, whether the patient receives post-operative radiotherapy, sensitivity to radiotherapy, patient’s physical condition and other factors, which cannot be generalized. Some malignant brain tumors have better 5-year survival rate after surgery, such as malignant lymphoma, which is more sensitive to radiotherapy treatment, and its 5-year survival rate is about 20%-30% after surgery to remove the tumor and adjuvant radiotherapy treatment; medulloblastoma is a kind of brain tumor with high malignancy, even if it is completely removed, it is still easy to recur after surgery, and its 5-year survival rate is less than 10%; low-grade glioma is also a kind of brain tumor with low malignancy. After complete resection, the 5-year survival rate is more than 50%. Therefore, how many years can a malignant brain tumor live after surgery is related to many factors mentioned above. If a malignant brain tumor is found, it is recommended to go to the neurosurgery or oncology department of a regular hospital as soon as possible, so that the treatment plan can be formulated after the evaluation of the disease by a specialist.