The good parts of meningioma are as follows: 1. convex surface of brain: the surface of brain; 2. both sides of sagittal sinus: near the midline position; 3. pontocerebellar angle: pontocerebellum and cerebellum form the angle; 4. oblique area of rock: the deepest place of neurovascular, surrounded by important neurovascular, which is more difficult to operate; 5. next to internal carotid artery: there are four vessels in the brain, the first two vessels are called internal carotid artery, one on each side, if the tumor happens to grow next to internal carotid artery, it will encircle the vessel, in this case the operation cannot be completely removed, which affects the prognosis.