Beneficial rhizosphere bacteria provides active assistance in resisting s in .

can enhance its invasive ability by using beneficial rhizosphere bacteria. is able to promote plant growth and provide a positive feedback effect to . However, the interaction between and under the influence of native polyphagous insect feeding is still unclear. In this study, , a local species closely related to , was used as a control, aimed to compare the content of in the roots of and rhizosphere soil after different densities of feeding, and then investigated the variations in the population of and soil characteristics after the addition of . The result showed that content in the rhizosphere soil and root of increased significantly under feeding compared with local plants, which also led to the change of α-diversity and β-diversity of the bacterial community, as well as the increase in nitrate nitrogen (NO N) content. The addition of in the soil could also inhibit the population growth of A. gossypii on and increase the content of ammonium nitrogen (NH -N) in the soil. Our research demonstrated that enhances the ability of to resist natural enemy by increasing soil ammonium nitrogen (NH -N) and accumulating other beneficial bacteria, which means that rhizosphere microorganisms help invasive plants defend themselves against local natural enemies by regulating the soil environment.