The main difference between a cerebral aneurysm and a venous tumor is the difference in blood vessels, causes and locations, and cerebral aneurysms are usually more common. Cerebral aneurysm and venous aneurysm both belong to cerebrovascular diseases, and the main difference between them is that they occur in different blood vessels, causes and locations. Cerebral aneurysms occur mainly in the arterial vessels and are formed when the arterial vessels inside the brain expand abnormally. If a cerebral artery aneurysm ruptures, the patient’s symptoms are generally more serious and the condition is more critical. Cerebral venous aneurysm generally refers to cerebral large vein aneurysm. Cerebral large vein is a venous structure located in the midline area, this disease is mainly aneurysmal dilatation of the cerebral large vein, which is usually rare, but this disease has a high rate of disability and death, and is more difficult to treat. It is recommended that patients with these conditions seek timely medical attention and active treatment under the guidance of a doctor to avoid delays and serious consequences.