In general, all intracranial AVMs are indications for endovascular intervention, especially for deep brain, important functional areas, high blood flow or large AVMs, where endovascular intervention is the first treatment method to be considered. Even if the malformed vascular mass cannot be completely embolized, because the main blood supply artery and most of the malformed vascular mass are occluded, the scope of AVM is reduced, blood flow is reduced, slow, and blood theft is alleviated, which is conducive to surgical resection or radiotherapy, making part of the cases traditionally considered inoperable to be operable; 3. Complications and risks are less than those of surgical procedures. The cases that can be cured by embolization are mainly small and medium-sized AVMs with 1-2 blood supplying arteries, and the smaller the lesion, the more complete the disappearance of the malformed vascular mass after embolization. The smaller the lesion, the more complete the disappearance of the malformed mass after embolization. Embolization can achieve cure in 20% of cases. For cases where only partial embolization can be achieved, embolization should be performed for hemorrhagic factors of malformed vessels such as cerebral aneurysm, incompetent draining veins, cerebral arteriovenous fistula and other malformed vessels associated with malformed vessels; surgery or radiotherapy should be given promptly after the lesion is reduced in size and blood flow is decreased and slow. The commonly used embolization materials are Onyx glue and NBCA glue, and the auxiliary materials are spring ring and balloon. For high-flow AVM, although the venous drainage is smooth, endovascular embolization can avoid the occurrence of power aneurysm after reducing the flow.