Intracranial aneurysms may cause increased intracranial pressure, but intracranial aneurysms do not always trigger increased intracranial pressure, for example, in the early stage when the aneurysm is not large, increased intracranial pressure may not occur. As the intracranial aneurysm will occupy the normal position of the brain tissue, it will cause extrusion to the normal brain tissue, and due to the limitation of the skull, the extruded brain tissue does not have the space to further expand outward, so the pressure of the brain tissue will become higher and higher, i.e., the symptom of increased intracranial pressure will appear. For cerebral aneurysm with increased intracranial pressure, some drugs can be used appropriately for treatment, such as intravenous drip mannitol can be given to the patient, which can play the role of dehydration and reduce intracranial pressure. Patients who meet the indications for surgery can be considered to be treated by surgery. Patients with intracranial aneurysm should seek medical treatment in time and under the guidance of the doctor, so as not to delay the condition and cause serious consequences.