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Allergic rhinitis (AR), as a recurrent allergic inflammatory disease, has an increasing inci- dence year by year in China, which seriously affects the work and life of patients. However, the pathogenesis of AR is still unclear, and the studies have found that intestinal flora and fecal metabolites can not only interact with each other, but both can participate in the occurrence and development of AR by affecting mucosal barrier function, regulating immunity, and so on, which may provide new possibilities for the treatment of AR. This paper reviewed the articles on the relationship between intestinal flora and related fecal metabolites and AR in recent years, in order to provide ideas for the treatment and pathogenesis of AR. [ABSTRACT FROM AUTHOR]