Acute otitis media with a duration of 3-6 months or more is called chronic otitis media. With active and effective treatment, chronic otitis media can be partially cured, but some severe cases can lead to different degrees of hearing loss. The principles of treatment are to eliminate the cause, control the infection, remove the lesion, clear the drainage and restore the hearing function. The specific treatment methods are as follows: 1. Treatment of the cause, active treatment of focal diseases of the upper respiratory tract, such as chronic tonsillitis, chronic suppurative sinusitis, etc. 2, systemic application of antibiotics in acute attacks. When the mucous membrane of the tympanic chamber is congested and edematous with pus and mucus pus, local drug ear drops can be used, such as compound rifampin ear drops, oxyfloxacin ear drops, chloramphenicol ear drops, etc. The external ear canal should be thoroughly cleaned and the pus in the tympanic chamber should be removed before using the medication. 3. Perform mastoid surgery if the drainage is poor, conservative treatment is ineffective, or if there are complications. Chronic otitis media can be caused by acute otitis media not receiving timely and appropriate treatment or by the recurrence of acute otitis media and its prolonged transformation, so acute otitis media should be treated thoroughly to reduce the incidence of chronic otitis media.