The present invention provides a novel organic acid glycoside existing in coffee beans and a use thereof.wherein, each of R1 to R7 is independently selected from a group consisting of H, OH, NH2, OCH3, OC(O)CH3, and NHCOCH3;A is selected from C1 to C6 alkyl or C1 to C6 alkenyl, and the C1 to C6 alkyl or C1 to C6 alkenyl may be substituted by methyl or ethyl.