Abstract: Based on the changing conditions of the input of the electrolyzer and the output of the hydrogen fuel cell, the energy management strategy of the integrated hydrogen energy storage system in the station considering the fluctuation characteristics of new energy output is studied. Firstly, the integrated hydrogen energy storage system architecture of new energy station including electrolyzer, hydrogen storage tank and hydrogen fuel cell is established. The voltage model of electrolyzer, hydrogen storage tank model and fuel cell model are established according to the mechanism of hydrogen - electric energy conversion. Secondly, the influence of Nernst electromotive force of hydrogen fuel cell and electrochemical loss of reaction process on the output voltage and energy conversion efficiency of the fuel cell is analyzed, and the energy management strategy of hydrogen energy storage system of new energy station is formed, which aims at optimizing the hydrogen energy storage system and considers the operation constraints of electrolyzer, hydrogen storage tank and hydrogen fuel cell. Finally, a simulation model is established based on MATLAB software to verify the feasibility of the hydrogen energy storage architecture and the correctness of the energy management system.