The time from the onset of malignant brain tumor to death cannot be determined and is based on a combination of factors such as the size and nature of the malignant tumor and the patient’s tolerance to treatment. Malignant brain tumors are divided into primary and metastatic tumors, of which primary gliomas are pathologically graded as grade I-IV. Gliomas of grade I-II are low-grade, less malignant, and most of them can be cured if given surgery and post-operative radiotherapy, and the possible survival period of patients is 5-10 years. In contrast, grade III-IV are high-grade gliomas, which are more malignant and prone to recurrence after surgery, and the average survival of patients is only about 14 months even if they receive radiotherapy. In the case of malignant brain metastases, survival is usually only 1-3 months if they are not treated in time after occurrence. The survival of patients can be significantly improved after treatment, and the cure rate of patients can be further improved if targeted therapy is administered. And surgery with radiotherapy can extend the survival time of brain tumor patients to a certain extent. Therefore, patients must go to the neurology department of the hospital for examination and targeted treatment after the diagnosis of brain tumor.