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To reduce the enormous energy produced by the cloud computing system and achieve reasonable utilization of a variety of resources, a virtual machine placing model with multi-resource energy consumption optimization is built and a virtual machine placement algorithm—multi-object resources random multiple sets re-optimization algorithm(RMRO) is proposed. In RMRO, the multi-group sequences of the virtual machine is randomly generated, and after each sequence is optimized , the optimal sequence is selected from the optimized multi-group sequences. Based on RMRO, to optimize the virtual machine allocation sequence , three kinds of policy is proposed. Through the experimental comparison , MMBA is selected as the optimal strategy. Compared to the traditional algorithms which include MBFD and MBFH , RMRO can significantly reduce energy consumption, and make a variety of resources more reasonable in the cloud computing system.