Hydrogen peroxide wash ear pain, clinically there may be the following cases: the first case, the patient ear canal cerumen or foreign body blocking the ear canal, when washing the ear with hydrogen peroxide, hydrogen peroxide and foreign body oxidation leads to foreign body expansion, compression and blockage of the ear canal, resulting in the patient to appear inside the ear swelling and pain feeling. The second situation, some patients have acute otitis externa or suppurative otitis media, skin erosion of the external auditory canal, exposed bone, perforation of the tympanic membrane in the middle ear cavity, exposed mucous membrane of the tympanic cavity, when washing the ear with hydrogen peroxide, hydrogen peroxide and fresh trauma contact will lead to a very stimulating and painful sensation. Generally for this situation clinically to check, if there is a fresh wound try not to use hydrogen peroxide to clean, if there is pain the doctor had better clean up the hydrogen peroxide as soon as possible to reduce the patient’s pain continues to occur.