Hydrogen peroxide has a bactericidal disinfection effect, applicable to tympanic membrane perforation, purulent otitis media, otitis externa and other ear flushing, step by step method of cleaning up secretions, hydrogen peroxide flushing, cleaning up hydrogen peroxide. 1. Cleaning up secretions: Before using hydrogen peroxide to flush the ears, clean up the ear canal secretions, you can use medical swabs to wipe clean. 2. Hydrogen peroxide flushing: use a syringe to extract 1 to 2 milliliters of hydrogen peroxide, the affected ear upward, the hydrogen peroxide drops into the ear canal, the medicinal bath for about five minutes. 3. Clean up the hydrogen peroxide: use a medical swab to wipe the hydrogen peroxide inside the ear. In the use of hydrogen peroxide flushing ears, the force should not be too large, do not frequent flushing, flushing ears after the symptoms have not been significantly relieved, need to go to the hospital in time for relevant examinations.