Aneurysm literally means the appearance of a tumor on top of an artery. In fact, aneurysm is one of the more serious diseases in the vascular system, mainly due to local arteriosclerosis, the elasticity of blood vessels decreases and cannot resist the pressure inside the vessel, which gradually is propped up and the lumen expands. 1. Blood breaks through the inner lining of the artery, so it will cause dilatation, and the wall of the aneurysm is thin, which will cause the risk of rupture and hemorrhage, and it is common in the aorta, iliac artery or some parts of the intracranial artery, which requires surgery or intervention. Brain aneurysms are relatively serious, with a high percentage of ruptured aneurysms resulting in cerebral haemorrhage. The consequences of not treating the aneurysm when it starts are very serious, so it is important to treat the symptoms and arrange for surgery as soon as possible. 3. Untreated aneurysm can easily lead to many sequelae, such as migraine, cerebral hemorrhage, etc. These are among the sequelae. Also, when treating this disease, it is important to relax your mind to avoid blood pressure fluctuations, which can cause bleeding. Aneurysm care after surgery is very important to avoid strenuous exercise and to keep the patient relaxed and happy. If bleeding occurs again, it is bound to cause harm to the body.