The composed energy storage and hybrid power system achieves efficient recycling and reusing of energy, but the vehicle economic performance is not optimal. Therefore, a vehicle facingbackward simulation model is established based on MATLAB/Simulink. Corresponding objective functions were set on the basis of analysis about the three subsystems of the complex energy storage and hybrid power system. Meanwhile, Isight software was used to coordinate and optimize the multiple systems. Then, the obtained optimized results of key parameters were analyzed by using a vehicle simulation model. The result shows considerable improvement of the vehicle economic performance. Besides, a hardware in the hoop test platform was used to make verification. The simulation shares basically the same result with the experiment. That proves the the cooperative optimization algorithm is effective in optimizing the complex energy storage and hybrid power system of the loader, and provides reference for design and application of the system.