Cetylpyridine chloride, a quaternary ammonium salt compound, is the active ingredient in some mouthwashes on the market.It has antiseptic properties and is used as a solution or lozenges to treat minor infections of the mouth and throat.The antimicrobial activity is due to the interaction between basic cetylpyridine ions and acidic molecules on bacteria, resulting in the formation of weak ionic compounds that interfere with bacterial respiration, thus inhibiting bacterial metabolism.After containing gargle can reduce or inhibit the formation of dental plaque;It has the function of keeping oral cavity clean and removing bad breath.