The energy management control system of electro-mechanical transmission (EMT) system was designed and verified based on V-mode development. It realized the power management and integrative control by running the control strategy and driving the actuators. The control system was verified and validated by the road test. The results indicate that the design scheme of power-split and control system and control strategy are correct and feasible. The developed control system can realize the function of power management and integrative control. The design and validation work is easier to implement by using the V-mode method and the research and development efficiency is improved.