Abstract: Using Chloris virgata. as the host plant and Rhizoctonia solani and Aspergillus niger as mycorrhizal agents, a simulation experiment of cadmium pollution was conducted in greenhouse pots to study the effects of Arbuscular Mycorrhizal Fungi (AMF) on the growth, physiological characteristics, and cadmium accumulation of C. tigris. under cadmium stress. The main results showed that: 1) when not inoculated with AMF, low concentrations of cadmium（5mg/kg） promoted the growth of C. tigris, while high concentrations of cadmium （50 mg/kg）inhibited its growth; with the increase of Cd²⁺ concentration, the antioxidant enzyme activity (POD) and root vigor of C. tigris showed a tendency to increase and then decrease, and the contents of soluble sugars, soluble proteins, chlorophyll, and malondialdehyde showed a tendency to rise; 2) without cadmium stress, AMF promoted the growth of C. tigris, and the contents of POD and soluble sugar of C. tigris increased; 3) under all cadmium stress treatments, the cadmium concentration of C. tigris was greater than that of the aboveground; after the inoculation of AMF, the aboveground cadmium concentration coefficients of C. tigris were all enhanced; 4) within a certain cadmium concentration range, AMF increased the root vitality of C. tigris, the contents of POD and photosynthetic pigments, and enhanced the tolerance of C. tigris to cadmium. The results of this study can provide a certain experimental basis for the remediation of soil cadmium pollution.