Male patient, 14 years old. Sudden onset of severe headache and dizziness with nausea and vomiting 2 months ago. He was unconscious for about 1 minute. The patient was admitted to a local hospital as an emergency, and a cranial CT showed “intraventricular hemorrhage”. In order to clarify the cause, whole brain DSA and cranial MRI showed right parietal arteriovenous malformation, and for further treatment, he came to our hospital and was admitted as “right parietal AVM”. There were no positive signs on neurological examination. Auxiliary examination: whole brain DSA showed right parietal intracranial arteriovenous malformation; head MRI showed right temporoparietal arteriovenous malformation. After discussion within the department, it was concluded that the malformed vascular mass was huge and close to the functional area, and single surgical treatment might result in complications such as hemorrhage, postoperative hemiparesis and hemianesthesia, etc. If interventional embolization was performed, it was possible that all the blood supplying arteries could not be embolized and the malformed vascular mass would recur again, and complications such as intraoperative cerebral hemorrhage and cerebral infarction at important functional areas would occur. The best treatment option is to embolize part of the blood supplying vessels first and then remove the malformed vascular mass by craniotomy. This can reduce intraoperative bleeding and remove all the malformed vascular masses at once. The operation went smoothly and the patient recovered well after the operation with no significant neurological deficits. Sanbo Brain Hospital of Capital Medical University has a strong team for the treatment of cerebrovascular disease, led by Zhang Yongli, a famous neurosurgeon and authoritative expert in the diagnosis and treatment of cerebrovascular disease, who has accumulated experience in more than 1,000 cases. He leads the multidisciplinary doctors related to cerebrovascular disease to carry out individualized and comprehensive treatment of cerebrovascular disease, and carries out neurointerventional radiology work, using cerebral angiography technology to improve the diagnosis and treatment effect. He has rich clinical experience in the surgical treatment of various complex and difficult intracranial tumors, aneurysms, ischemic cerebrovascular disease, embolization of complex giant arteriovenous malformations, carotid endarterectomy, carotid stenosis and other diseases.