Many people experience transient ear pain and tinnitus after an airplane ride. The ear pain and tinnitus that occur after an airplane ride are related to the damage to the inner ear caused by changes in air pressure during takeoff and landing, which is called air pressure damage. If the difference between the air pressure inside and outside the tympanic chamber reaches 15 mmHg (about the same as the aircraft at 152 meters), the gas inside the tympanic chamber can open the eustachian tube and escape, so that the air pressure inside and outside the tympanic chamber can be rebalanced. The eustachian tube opens once every time the pressure difference between the inner and outer tympanic chamber reaches 11.4 mmHg. When the pressure difference between the tympanic chamber and the outside world reaches 15~30mmHg, the mucous membrane of the middle ear will become congested and the tympanic membrane will be sunken, which will affect the connection between the inner ear and the middle ear. –This change also has a strong stimulating effect on the vestibular window and the cochlear window, which may lead to oozing, bleeding and fluid accumulation in the inner ear, resulting in inner ear dysfunction and ear pain and tinnitus. Most air pressure injuries occur during the landing process, especially when descending within the range of 4,000 to 10,000 meters. How can I avoid ear damage during airplane rides? Long flights are long and boring, and inevitably accompanied by jet lag, so sleeping on the plane is inevitable. However, when you hear the radio reminding you that the plane is about to descend, you must adjust your state in time and wake up from sleep as soon as possible, especially if you are traveling with children. You can chew and swallow, or you can also do the action of pinching the nose and closing the mouth to blow air into the ear (but this action is not suitable for young children). Because the eustachian tube is connected to the nasopharynx in our ears, the upper respiratory tract infection that accompanies a cold is likely to spread to the eustachian tube and damage the function and structure of the latter.