Aiming at the need of improving ride comfort and the limitation of relying on a single control algorithm, this paper presents a hybrid control method with simple structure, high performance and low application cost. Firstly, a variable index ceiling control is designed, and the simulation shows that the control effect is better in the low frequency band and better than the traditional ceiling. Secondly, the LQG control is designed, and the Q and R matrix is optimized by genetic particle swarm optimization algorithm to obtain the global optimal solution. According to the analysis, the control effect is better in the high frequency region and the algorithm is mature and stable. Then the two are fused by the way of high and low frequency division to realize the joint control of the electric controlled air suspension damping in the full frequency band. Finally, a simulation model of 1/4 car electronic control air suspension based on MATLAB/Simulink platform and a hardware-in-the-loop experiment platform (HIL) based on U2 rapid control prototype and dSPACE/Simulator real-time simulator are built. Simulation and experimental verification are carried out under random road conditions. Compared with passive suspension and SH-ADD hybrid control, the acceleration of the body decreases by 15.53% and 6.42%, respectively, which achieves better control effect in the whole frequency band and fully improves the ride comfort.