The first is the perforation of the tympanic membrane, which is a very common sequelae of otitis media. The perforation of the tympanic membrane leads to a direct connection between the tympanic chamber and the outside world, so that viruses, bacteria, or microorganisms from the outside world can enter the tympanic chamber directly and trigger an infection in the tympanic chamber at any time, depriving it of a protective barrier. The second is the sequelae of otitis media, which can lead to tinnitus. This tinnitus can occur after the perforation of the eardrum, or it can be caused by repeated inflammation of otitis media, which can damage the inner ear and lead to neurological tinnitus. The third is hearing loss, which is mostly conductive in nature, but if the patient has a very long history, neurological deafness can also occur. The fourth is that after the perforation of the eardrum, the patient may have pus flowing from the ear canal at any time, especially after a cold and sinusitis, which can easily cause pus flowing from the ear canal and other related symptoms. The fifth is that some patients with otitis media can experience recurrent pain in the ear. This pain is mainly due to inflammatory stimulation of the tympanic chamber, which damages the nerves in the tympanic chamber and induces pain, and some patients with otitis media can also experience recurrent vertigo and other related changes. Some patients with otitis media may also experience recurrent vertigo and other related changes. In some cases, if the history of otitis media is particularly long, it may cause atrophy and sclerosis of the auditory chain, as well as calcium plaques in the tympanic chamber and other related changes.