Cerebral aneurysm, also known as intracranial aneurysm, is an abnormal bulging of the arterial vessels inside the brain. The cause of the disease is unclear and may be related to congenital vascular malformations, atherosclerosis, trauma, and other factors, and should be consulted in neurosurgery and neurology. Intracranial aneurysm has the risk of rupture and hemorrhage, which may cause headache and blurred consciousness, and may be life-threatening in severe cases. Therefore, patients with intracranial aneurysms should consult neurosurgery and neurology in a timely manner. Under the guidance of doctors, they should improve the examinations such as cranial CT, cranial MRI, cerebral angiography, etc., and actively cooperate with the doctors for treatment after confirmation of the diagnosis. Patients with intracranial aneurysm should seek medical treatment in time, and in daily life, they should pay attention to controlling blood pressure, avoiding emotional excitement, quitting smoking and alcohol, and paying attention to rest.