Abstract: 【Objective】 In this study, two different AM fungi were inoculated in wild Bromus inermiss to explore the effects of inoculation with AM fungi under salt stress on the physiology of wild Bromus inermiss. 【Methods】 Under salt stress conditions of 0%, 0.4%, 0.6% and 0.8% NaCl concentration, respectively, whether plants inoculated with AM strains could improve the salt tolerance of wild Bromus inermiss compared with plants not inoculated with AM fungi. 【Results】 Inoculated with AM fungus could increase plant height, stem diameter, dry weight of underground part and dry weight of above ground part of wild Bromus inermiss. Inoculation with AM fungi could significantly improve the activities of antioxidant enzymes (SOD, POD, CAT), and the contents of soluble sugar and proline in wild Bromus inermiss. With the increase of salt concentration, MDA content of inoculated AM fungi was significantly lower than that of uninoculated AM fungi. 【Conclusion】 Inoculation of both AM fungi could promote the growth of wild Bromus inermiss and improve the salt tolerance of wild Bromus inermiss.