The easiest way to identify cerebrospinal fluid ear leakage is to perform imaging studies such as CT and MRI of the brain. Once cerebrospinal fluid deafness is suspected, it is recommended to go to the hospital as soon as possible. Cerebrospinal fluid ear leakage is mostly caused by trauma, often accompanied by temporal bone fracture, which can be manifested as clear watery fluid flowing out of the ear or nasal cavity. 1.CT manifestation: congenital cerebrospinal fluid ear leakage can be seen between the inner ear canal and the vestibule or cochlea with bone defect area. Acquired cerebrospinal fluid ear leakage can be seen in the bone defect area, meningeal expansion within the tympanic cavity, trauma, inflammation or tumor. 2.MRI performance: T2WI and water imaging show that the cerebrospinal fluid high signal shadow in the cranial cavity and the ear are connected. A linear low-signal shadow formed by the bone or meninges between them is interrupted here. This interruption is the leak. Accompanying manifestations of trauma, inflammation, tumor, or inner ear malformation. If a cerebrospinal fluid ear leak occurs, you need to seek medical attention as soon as possible to avoid delays.