Abstract: In order to effectively improve the energy consumption of the fuel cell hybrid power system, reduce fuel cell performance weaken, and maintain the state of charge（SOC） of the auxiliary power source, this paper proposed an online identification method based on forgetting factor recursive least squares（FFRLS） and an integrated energy management strategy based on minimum principle. This method can transform multiple targets into single targets. This method can complete the power allocation between the main power source and the auxiliary power source based on the online identification results and the DC bus demand power, and compare to the offline identification algorithm results and the results of the equivalent consumption minimization strategy（ECMS）. The results show that this method optimizes the energy consumption ratio offline and ECMS results by 6.33% and 4.35%, respectively, and optimizes the fuel cell performance weaken by 4.72% and 6.98%, respectively, and can better maintain the SOC of auxiliary power sources.