Belonging to the technical field of soil pollution biological treatment, the invention in particular discloses a Bacillus cereus TH-35 strain capable of activating heavy metal cadmium in soil. The strain is preserved in Guangdong microbiology culture center (GDMCC) on June 13, 2016, and the preservation number is GDMCC No.60044. According to the invention, an indigenous microorganism with efficient cadmium activation function is screened out from farmland soil, and is utilized to activate soil mineral nutrients at the rhizosphere and promote plant growth, at the same time, the indigenous microorganism also can effectively dissolve soil carbonate bounded forms, phosphate bounded forms and other major bounded forms of cadmium, thus effectively improving the efficiency of remediation of soil heavy metal cadmium by hyperaccumulator plants. In the process of activating soil heavy metal cadmium with the strain, no emission pollutant unfriendly to the environment is generated, therefore the Bacillus cereus TH-35 strain has great application prospects in preparation of environment friendly soil conditioners.