When riding the high-speed rail, the ear swelling is mainly caused by the unbalanced pressure inside and outside the middle ear cavity, so when riding the high-speed rail, you can do chewing actions, such as chewing gum or ginger slices, or pinching your nose and pulling your ears. If these treatments are not effective, you can also do eustachian tube blowing. If inflammation is accompanied by auxiliary anti-inflammatory drugs, cephalosporins or penicillin anti-inflammatory drugs, such as amoxicillin and cefixime, are often used clinically. If there is effusion in the middle ear cavity or tympanic cavity, tympanic membrane puncture and drainage or tympanic membrane catheterization are needed.

Generally speaking, because the speed of high-speed rail is relatively fast, its air pressure will change a little. At high speed, the air pressure around us will be lower than the air pressure inside the human body, which will cause your eardrum to sink in, so you will feel your ears swell. In this case, we can hold our noses and blow into our ears, or yawn with our mouths open, or chew gum, just like flying.