Traditional diesel engine test platform produced a large energy loss with low testing accuracy and poor automation and intelligent of control system. In order to overcome the above shortages, the energy recovery test platform based on energy storage technology was developed. The system design of energy recovery test platform was described, and energy storage capacity setting and design system topology were analyzed, detail in multi-function mode and the design of intelligence control system. According to experiment data, the reliability and efficiency of energy recovery system was proved. At last, the prospects and advantages of combining energy storage technology with traditional industrial technology upgrading were summarized.