The current design of the high-voltage motor energy efficiency measurement and testing platform takes a long time, and has the problems of low efficiency and poor detection accuracy. Therefore, the design of a high-frequency motor energy efficiency measurement and detection platform based on a broadband power measurement system is proposed in this paper. An insulation resistance signal acquisition module, a temperature signal acquisition module and a partial discharge signal acquisition module are designed in the hardware part. The relay is controlled by a relay switch to avoid measurement errors caused by current commutation and improve resistance detection accuracy. The login window function, administrator function, historical data query function, status display function and alarm function are implemented in the software design. The output parameters are obtained, and the measurement and detection of the energy efficiency of the high-voltage motor is realized through calculating the input information parameters, using the broadband power system and the switch filter bank to achieve the fundamental and harmonic measurement separately. The experimental results show that the detection platform designed by the proposed method has shorter detection time and higher accuracy of detection results, and has certain practical applicability.