The purpose of hydrogen peroxide drops in the ear is to wash away inflammatory secretions and necrotic tissues from the outer or middle ear canal. Hydrogen peroxide contains hydrogen peroxide, which reacts with inflammatory secretions and necrotic tissue. When there is a large amount of pus in the external auditory canal due to otitis externa or otitis media, it is important to dissolve the pus by applying hydrogen peroxide drops or wipes to the ear first, and then the pus can be cleared well. After clearing, patients will be advised to use a dry cotton swab to wipe the hydrogen peroxide clean again, and then slightly after ten minutes or so, then use antibiotic ear drops, so as to enable the ear drops to act directly on the surface of the inflamed tissues, otherwise the pus and necrotic tissue scabs in the ear canal will dilute the medicine and prevent it from exerting its antimicrobial effect. It is recommended to pay attention to ear hygiene in daily life, in the diet also need to pay attention to the health of light diet, avoid spicy and stimulating food, can drink more water to promote metabolism, can also be appropriate exercise to enhance immunity. When the ear is not suitable, you should actively seek medical treatment, and standardize the use of medication and treatment after a clear diagnosis by a specialist.