Abstract: As a new means of energy storage,hydrogen production by electrolysis of water is a green means to adjust the output of electricity from wind energy. This paper takes wind power generation, photovoltaic power generation, electrolytic hydrogen production and fuel cell as the research object,and through modeling and simulation of the output and input power of the photovoltaic complementary power generation system and the electrolytic water hydrogen production system, coordinates and optimizes the control of the load change requirements of the photovoltaic power generation, electrolytic cell,fuel cell and system load, and improves the load imbalance between the photovoltaic power generation electrolytic water hydrogen production system and the system load,It provides a theoretical basis for the stable operation of the wind-solar complementary renewable energy system.