Secretory otitis media is a non-suppurative inflammatory disease of the middle ear characterized by fluid accumulation in the middle ear and hearing loss. The incidence is higher in pediatric patients than in adults, and the disease is one of the major causes of hearing loss in pediatric patients. According to the duration of the disease, it can be divided into two types: acute and chronic, and otitis media with a duration of 12 weeks or more is considered chronic. Chronic otitis media is caused by acute otitis media that has not been treated in a timely and appropriate manner, or by acute otitis media that has been repeatedly attacked, prolonged or transformed. The symptoms of secretory otitis media are as follows: 1. Hearing loss: Most people with a history of cold before the onset of acute secretory otitis media have a gradual hearing loss, accompanied by enhanced self-hearing. When the head position changes, such as leaning forward or favoring the affected side, the hearing can temporarily improve because the fluid leaves the cochlear window. In chronic cases, the onset of the disease is insidious, and patients are often unable to say when it started. Most of the pediatric patients show signs of ignoring calls from others, turning up the volume when watching TV, inattentiveness when studying, and decreased academic performance. If the other ear of a pediatric patient is normal, it may also go unnoticed by parents for a long time. 2. Ear pain: Patients with acute secretory otitis media may have ear pain at the beginning of the disease, while chronic patients may not have obvious ear pain. 3.Sense of occlusion in the ear: The feeling of occlusion and stuffiness in the ear is one of the common complaints of patients, and this symptom can be temporarily reduced after pressing the ear screen. 4.Tinnitus: Some patients have tinnitus, mostly intermittent, such as “crackling” sound. When the head moves, yawns or jerks the nose, the sound of air passing through water can appear in the ear. There are surgical and non-surgical ways to treat secretory otitis media, mainly a combination of treatment to remove middle ear fluid, control infection, improve middle ear ventilation and drainage, and treat related diseases. Non-surgical treatment 1. Antibiotics: Penicillin, erythromycin and cephalosporins can be used for acute secretory otitis media. 2.Glucocorticoid: local application, anti-inflammatory and anti-swelling. 3.Bang Ear Appropriate middle ear negative pressure therapy instrument: improve middle ear ventilation. The therapeutic instrument provides continuous and stable air pressure flow to the nasal cavity, and when the patient swallows the airflow is transmitted to the eustachian tube, thus opening the eustachian tube. Damage to the eardrum can be avoided due to precise pressure control. Surgical treatment 1. Tympanic membrane puncture: Extraction of fluid. Repeat punctures may be performed if necessary. Glucocorticoids can also be injected after the fluid is withdrawn. 2. Tympanotomy with tube placement: For chronic secretory otitis media and glue ear with prolonged, long-term or recurrent disease, a ventilation tube can be placed at the incision after the tympanotomy and full aspiration of the fluid to improve the ventilation of the middle ear, facilitate the drainage of fluid and promote the repair of the function of the eustachian tube. 3. Balloon dilation of the eustachian tube (BET): For chronic ET dysfunction, it has become a new technique to treat the disease. the application of BET is simple and feasible, safe and minimally invasive, and has benefited many patients. For patients whose conventional treatment is ineffective, BET surgery should be performed as early as possible to unblock the eustachian tube and prevent complications. 4.Other: actively treat nasopharyngeal or nasal diseases, such as adenoidectomy, nasal polyp removal, partial inferior turbinate resection, submucosal correction of nasal septum, etc.