Cerebral arteriovenous malformation (AVM) is the most common malformation caused by abnormal development of cerebral blood vessels. It accounts for more than 90% of cerebral vascular malformations. Malformed blood vessels are composed of arteries and veins, some of which contain aneurysms and venous aneurysms. Cerebral arteriovenous malformations have blood supply arteries and drainage veins, and their sizes and shapes vary. This disease can occur in any part of the brain, and the distribution of lesions on the left and right sides is basically equal. More than 90% are located on the tentorium cerebelli, and most are distributed in the cerebral cortex, accounting for about 70% of supratentorial lesions. Among them, the parietal, frontal, and temporal lobes are more common, and the occipital lobe is slightly less common.