The effect of fluoride mouthwash is mainly to prevent the occurrence of dental caries, fluoride ion has been added to the daily drinking water, so the fluoride mouthwash, although it has a certain effect, but the effect is not obvious, and the toothpaste we brush our teeth with also already contains fluoride ion, when we often brush our teeth, all can play a good role in preventing caries, mouthwash is not recommended for patients to use for a long time, usually 1-2 weeks. The material containing fluoride needs to follow us all the time, just using it for two weeks is actually not any effect. The main function of mouthwash is anti-inflammatory and sterilization, so the mouthwash contains certain antibiotics, whether fluorine ion is added or not has little influence on the efficacy of the whole mouthwash, as long as the normal use of toothpaste containing fluorine for brushing, it can play the role of anti-caries.