Aviation otitis media is actually acute otitis media, also known as aviation otitis media because of the exact flight trigger. The middle ear is an organ of hearing, and the tympanic chamber of the middle ear has structures such as the tympanic membrane and the auditory tuberosity, and is connected to the external nasopharynx through the eustachian tube. Under normal circumstances, the external air constantly enters the tympanic chamber through the eustachian tube to replenish the absorbed gas, but when the ventilation of the eustachian tube is insufficient, the gas pressure inside the tympanic chamber begins to drop, and the pressure difference between the inside and outside of the tympanic membrane occurs, which makes the tympanic membrane prone to inversion When there is insufficient ventilation in the eustachian tube, the gas pressure in the tympanic cavity begins to drop, and the pressure difference between the inside and outside of the tympanic membrane occurs. The main reason for the occurrence of aviation otitis media is that during the flight at high altitude, the pressure inside and outside the tympanic membrane is balanced, but it is smaller than the atmospheric pressure on the ground. However, in some cases, when the lack of ventilation in the eustachian tube lasts for a longer period of time, the negative pressure in the tympanic chamber lasts for a longer period of time, which can easily cause edema and exudation of the mucous membrane in the eustachian tube and aggravate the lack of ventilation in the eustachian tube, resulting in the symptoms of acute otitis media. Clinical manifestations: The early manifestations of aviation otitis media may only have symptoms such as ear stuffiness, ear swelling and hearing loss, but when aggravated, there are symptoms of ear pain or even severe pain, and the symptoms of ear pain will be alleviated when pus flows out of the tympanic chamber after the tympanic membrane is perforated. Inadequate treatment can lead to chronic otitis media. In the above-mentioned course of the disease, there can be an interruption in the recovery of the course of the disease at any time due to timely treatment.