The treatment of recurrent otitis externa includes: 1. treating other diseases, such as diabetes, which can lead to lower resistance of patients and easily lead to recurrent otitis media; 2. actively treating chronic purulent otitis media to avoid the stimulation of long-term purulent secretions; 3. avoiding frequent ear-pulling, which can repeatedly inflame the skin of the ear canal and lead to local thickening and the formation of chronic otitis externa; 4. changing bad eating habits, such as addiction to tobacco and alcohol, spicy and irritating food, etc.; 5. going to a regular hospital to treat otitis externa.