1, otitis externa medication otitis externa (otitis externa) is a wide range of acute and chronic inflammation of the skin or subcutaneous tissue of the external auditory canal. According to the course of the disease can be divided into acute diffuse otitis externa and chronic otitis externa. Treatment of acute otitis externa should keep the external auditory canal locally clean, dry and drainage; local antibiotic ear drops; when the external auditory canal is red and swollen, local drops of 2% phenol glycerin; severe otitis externa requires systemic application of broad-spectrum antibiotics. Chronic otitis externa should be kept locally clean, and use local drying drugs (3% borate ethanol, etc.). 2, otitis media medication secretory otitis media secretory otitis media (secretory otitis media) is a non-purulent inflammatory disease of the middle ear mainly characterized by middle ear effusion and hearing loss. The disease can be categorized into acute and chronic. Eustachian tube dysfunction is one of the major causes of this disease. Children need to know whether the adenoids are hyperplastic, and adults need to know about nasopharyngeal lesions (taking care to exclude nasopharyngeal cancer). Treatment: non-surgical treatment includes: antibiotics: acute secretory otitis media can use penicillin, macrolides, cephalosporins and other broad-spectrum antibiotics orally or static drip; to keep the nasal cavity and the Eustachian tube open: decongestant such as 1% ephedrine, hydroxymethazoline hydrochloride drops (spray) nasal cavity; Eustachian tube blowing. Surgical treatment includes: tympanocentesis; tympanotomy; tympanotomy with tube placement; adenoidectomy (children over 3 years old); nasal polyp removal; partial resection of the inferior turbinate; sinus endoscopic surgery; nasal septum correction. Acute suppurative otitis media(acute suppurative otitis media) is a suppurative inflammation of the middle ear mucosa caused by bacterial infection. Treatment: early application of adequate antibiotics to control the infection, can be preferred to penicillin, cephalosporins, can also be used to macrolides and other antibiotics orally or intravenously; nasal decongestant, such as hydroxymethazoline hydrochloride, 1% ephedrine and other nasal spray. For local treatment, 2% phenol glycerol drops can be applied before tympanic membrane perforation; after tympanic membrane perforation, 3% hydrogen peroxide can be used to thoroughly clean the pus in the external auditory canal, and then antibiotic ear drops without ototoxicity can be used. If the pus flow has stopped and the tympanic membrane perforation does not heal for a long time, tympanic membrane repair can be done. Chronic suppurative otitis media (chronic suppurative otitis media) is a chronic suppurative inflammation of the middle ear mucosa, ossicles, or deep bone. According to the pathological changes and clinical manifestations can be divided into simple type, bone ulcer type and cholesteatoma type. Treatment: simple type to local medication, antibiotic ear drops, before using 3% hydrogen peroxide to thoroughly clean the external auditory canal and the pus in the tympanic cavity, and use cotton swabs to wipe dry, and then the drops of medication can be used; the resting stage of the feasibility of tympanic membrane repair surgery or tympanoplasty. If the drainage of bone ulcer type is smooth, local medication can be given first, and regular review. Those with poor drainage and ineffective local medication should be treated surgically. The cholesteatoma type should be operated as early as possible.3. The medication of cerumen embolism is called impacted cerumen when cerumen accumulates too much in the external auditory canal, forming a hard mass and blocking the external auditory canal. Treatment: softening cerumen medication (sodium bicarbonate ear drops, etc.) can be applied to the ear, and after the cerumen is softened, the cerumen can be flushed out with warm water or slowly sucked out with a suction device.