It doesn't matter. Students read books, do homework, exercise, wash and wear headphones every day until they go to bed. Will this hurt their ears? The critical eyes of the exploration team and the doctor of safety must find out the answer to the question in time and save those students who don't care.

The auditory system is susceptible to interference.

Turn up the volume when listening to music with headphones, which will interfere with your hearing and be harmful noise to your ears.

The volume is controlled at 7

Every time you listen to music with headphones, you should control it within one hour. It is best to put the volume at 7, which is equivalent to 95 decibels. If it is higher, it will damage your hearing.

Not too long.

After wearing headphones, the sound rushes directly into the ear without being filtered by the air. Even if the volume is small, it is still strong for the ear. A short time is ok. Who can stand it after a long time?