Symptoms and treatment of chronic otitis media, the symptoms are as follows: 1. Ear overflow night, intermittent or persistent, the secretions are mostly mucous or purulent. 2. When there are buds or polyps, blood is occasionally seen in the secretions. 2. hearing loss. 3. tinnitus. The principle of treatment is to control infection, improve drainage, remove lesions, restore hearing and eliminate causes: a. Medication, local medication for those with unobstructed drainage, systemic antibiotics for acute inflammation, and bacterial culture of secretions for those who have the conditions, and medication according to the results of bacterial drug sensitivity test. Second, surgical treatment, otitis media with granulation or polyps, soft tissue shadow in the mastoid visible on CT, and lesion invasion into the bone, should be done mastoid opening plus tympanoplasty.