The degree of resection is closely related to the prognosis. In low-grade gliomas, total or subtotal resection of the tumor is superior to partial resection or biopsy, and total or subtotal resection not only prolongs in patient survival, but also reduces the probability of glioma progression occurring and prolongs the time to malignant progression to high-grade glioma. A retrospective study of 1,097 patients with low-grade gliomas found that the median survival was 10.5 and 14 years for resections of less than 50% versus 50% to 99%, respectively, while the median survival was more than 15 years for those with total resections. Resection: Surgical resection is recommended in patients with an expected degree of resection of no less than 50%-70% (resected volume/total volume). In surgically resected cases, it is recommended to make as many resections as possible, total resection if possible, and dilation if possible. Biopsy: Preoperative consideration of less than 50% resection; Small lesions in deep functional areas of the brain; Widespread diffuse lesions; Multiple lesions; Unknown nature; Contraindication to craniotomy.