Pediatric otitis media often includes secretory otitis media and suppurative otitis media. When the treatment is timely and standardized, the damage to hearing is small, but untimely or incorrect treatment may lead to deafness, pus and other sequelae. Whether it is serious or not is related to the specific condition and whether it is treated timely and effectively. 1. Secretory otitis media: manifested by hearing loss, ear pain, tinnitus, affecting hearing development and normal speech ability and cognition, etc. Sometimes complications such as sclerosis of the tympanic chamber and cholesterol granuloma may occur. 2. Acute suppurative otitis media: tinnitus, pus and other symptoms may occur, which may turn into acute middle ear mastoiditis, which may lead to a series of intracranial and extracranial complications, such as headache, fever, malaise and so on. 3. Chronic suppurative otitis media: it is easy to lead to recurrent ear leakage, hearing loss, tinnitus and vertigo and other symptoms, or may be secondary to middle ear cholesteatoma. There are many factors leading to otitis media, and it is necessary to consult a doctor in time for systematic examination and standardized treatment for the causes and symptoms of otitis media.