A kind of novel bacterial quorum sensing regulator and its medical application, the present invention relates to a kind of Formulas I compounds represented, preparation method and use. There is the compound bacterial community to incude adjustment effect, can use the prevention and/or treatment of related disease caused by what bacterium infection.一種新型細菌群體感應調節劑及其醫療用途,本發明涉及一種式I所示的化合物、其製備方法和用途。該化合物具有細菌群體感應調節作用,可以用於細菌感染所致相關疾病的預防和/或治療。