Glioma itself may produce pressure on normal brain tissues, which may also produce cerebral edema, and the trauma of surgery may also produce cerebral edema. Clinically, cerebral edema can be controlled by some drugs, such as dehydration drugs, like mannitol, hormonal drugs, like methylprednisolone and dexamethasone, diuretics can also reduce cerebral edema, and some other drugs, such as human albumin, can supplement some colloid fluid to improve the colloid osmotic pressure of patients, which can also achieve the effect of relieving cerebral edema. In general, the post-operative cerebral edema of glioma can be controlled by a combination of drugs, so that the patient can pass the cerebral edema period. However, in some patients, such as those with large tumor size or high malignancy, the postoperative cerebral edema may be very serious. In this case, if the medication is not effective, the cerebral edema is not well controlled, and the patient has particularly severe cranial hypertension due to cerebral edema, surgical intervention may be required. Surgery, also known as surgery for cerebral edema, is usually cranial decompression, and both internal and external decompression can be used to reduce postoperative cerebral edema in gliomas.