The majority of cerebrovascular malformations can be detected by CT scanning and especially by enhancement scanning. Cerebrovascular malformations are congenital developmental anomalies that can be broadly categorized into four types, namely, cerebral arteriovenous malformations AVM, capillary dilatation sign, cavernous hemangioma, and venous malformations, of which only the capillary dilatation sign is difficult to be shown on CT and MRI, while the other three types can be clearly shown on CT plain scan as well as enhancement scan. The most accurate and reliable test for cerebral vascular malformation is cerebral angiography, which is the gold standard for cerebral vascular malformation. The most common type of AVM is AVM, which has a more typical CT appearance. On plain scanning, point-like or strip-like isodense or slightly hyperdense images can be seen in the brain. After enhancement, these blood vessels are obviously strengthened, showing strip-like enhancement or thick and tortuous blood vessels, and these characteristics can make the diagnosis clear.