Patients who have had a cerebral hemorrhage should not fly if possible and use other modes of transportation instead. Cerebral hemorrhage is a relatively common clinical condition, accounting for 10%-20% of the entire stroke population. The pathogenesis of cerebral hemorrhage is mainly due to the thin diameter of small intracranial arteries. Under the environment of long-term hypertension, the walls of small arteries form glassy or fibrous degeneration and necrosis, as well as local inflammatory changes, forming cornu aneurysms, which cause rupture of small vessels and cerebral hemorrhage when the intracranial blood pressure rises suddenly. When riding in an airplane, especially during takeoff and landing, rapid changes in intracranial pressure caused by changes in atmospheric pressure can easily cause blood vessels to rupture and bleed. Therefore, patients who have had a brain hemorrhage should not take a flight if possible.