There is no self-cure for otitis externa, it needs to be treated with anti-infective drugs, pay attention to cleaning the ear canal, as well as symptomatic treatment. Otitis externa is a diffuse inflammation of the skin of the external auditory canal, mostly bacterial infections, a few fungal infections, which can cause pain and edema of the external auditory canal. Inflammation of the external auditory canal has no self-healing method, and requires active treatment to avoid complications such as deafness and tinnitus. Treatment mainly involves cleaning the external ear canal, anti-infection treatment and symptomatic treatment. 1. Cleaning the external ear canal: if the tympanic membrane is not perforated, the external ear canal can be rinsed with 3% hydrogen peroxide diluted with water. 2. Anti-infective treatment: antibiotic ear drops can be used for bacterial infections, such as lomefloxacin hydrochloride ear drops, ofloxacin ear drops, and systemic medication for severe cases, such as levofloxacin capsules, roxithromycin capsules and so on. Fungal infections can be used mycotoxin, clotrimazole and other drugs. 3. Symptomatic treatment: high fever or severe pain, available antipyretic and analgesic drugs such as acetaminophen tablets, ibuprofen and so on. Pain in the external auditory canal should be promptly diagnosed and the cause of the disease, under the guidance of the physician to carry out regular medication and treatment, to avoid causing adverse consequences.