From the characteristics of imaging, pathological examination results, etc., one can determine whether the brain tumor is benign or malignant. 1. Imaging: Generally, malignant brain tumors can be seen as adhering to the surrounding tissues, having no boundary and irregular shape on imaging, while benign ones are the opposite. In addition, regular CT, MRI and other imaging examinations can show that benign ones grow more slowly and malignant ones grow rapidly. Tumors in the brain can cause cerebral edema, and the symptoms of edema in malignant ones are more obvious, and they have a greater impact on the surrounding tissues. 2. Puncture biopsy or surgical pathological examination can be carried out to directly extract brain tumor tissues for laboratory tests, so as to determine whether it is benign or malignant, which is the gold standard for diagnosing benign or malignant brain tumor.