Abstract:Drosophila suzukii (Matsumura) (spotted wing Drosophila) is a notorious pest of small and stone fruits, and causes damage across Asian, American and European continents. Unlike most other Drosophila species, female D. suzukii flies lay their eggs in ripening and ripe fruits and the hatched larva eat inside, thereby causing substantial economic losses to the fruit industry. Insect-associated microbes are essential in manipulating insect physiology and ecology, such as insect development, fitness and reproduction. Here, we review recent researches on the diversity of microbes in D. suzukii and the functions of microbes in D. suzukii biology. That information may provide clues for searching strategies to control D. suzukii populations.