Abstract: In order to improve efficiency of Electro-Hydraulic regenerative braking system on electric bus, this study will analysis dynamic performance and typical driving condition of electric bus based on ADAMS to establish electric bus simulation mode. The problem that EV does not have long endurance will be addressed in this study. The core innovation of this study is the design of Electro-Hydraulic regenerative braking system. In order to testify feasibility of this system, we will built hydraulic regenerative braking system simulation model based on AMESim and do simulation under ECE-15 cycle conditions. The result of foremost simulations aren’t good enough, due to the volume of pump is constant, so we replace variable pump for constant pump and do simulation again. The results of simulation under ECE-15 cycle conditions show that the regenerative braking energy system can enhance endurance of EV and improve the efficiency of regenerative braking energy, meanwhile there is no influence to safety of vehicle.