Fuel cell vehicles regain their momentum and become the hot topic of hybrid electric vehicle research with the increasingly severe environmental issues and the maturity of relating technologies. The thesis works aim to investigate the possibility of extending the FCV's driving range by improving the efficiency of the fuel cell and the electric machine based on ADVISOR. The thesis works can be divided into three stages: in the first stage, several control strategies were proposed, including power follower control, discretization method, fuzzy logic control. These proposed control strategies were compared with the power follower control strategy in ADVISOR. The simulations were run over three drive cycles with SUV parameters loaded.