Listening to sound with headphones for a short period of time and at a low volume will not cause great damage to the ears. But if it is a long time loud sound, it will cause great damage to the ears, mainly including the following: 1. Listening to music at high volume, if the headphone sound is greater than 100 decibels, more than an hour, it may cause irreversible permanent damage to the hearing. Especially in a noisy environment, listening to music with loud headphones can cause serious damage to the hair cells of the inner ear. Because once the inner ear hair cells are damaged, it will lead to permanent loss of hearing, and the hair cells cannot be regenerated; 2. If you listen to music with headphones for a long time, it will also cause great damage to your ears. The external ear canal, leading to the possibility of patients being prone to otitis externa. Therefore, in reality, patients are advised to listen to music with headphones as little as possible.