The invention relates to an ejection hydrogen energy working system which comprises a hydrogen reaction bed unit, a hydrogen ejection unit, a hydrogen expander, a generator, a storage battery and an external power grid. The hydrogen ejection unit is provided with an ejector, a hydrogen pump and a gas storage tank, and the ejector is provided with an ejection gas inlet, a working gas inlet and an ejection gas outlet. The hydrogen reaction bed unit is connected to the ejection gas inlet of the ejector through a negative pressure hydrogen outlet pipeline, and the ejection gas outlet is connectedto the gas storage tank through the hydrogen pump. An outlet of the gas storage tank is divided into two paths, one path is connected to the working gas inlet, the other path is connected to an inletof the hydrogen expander through a hydrogen inlet pipeline, and an outlet of the hydrogen expander is connected to the hydrogen reaction bed unit through a negative pressure hydrogen inlet pipeline. According to the system, the hydrogen reaction bed unit and the hydrogen ejection unit are combined, hydrogen is used as a circulating working medium, natural energy is fully utilized to drive the expander to do work, and drive the generator to generate electricity, energy conservation and emission reduction are facilitated, and economic benefits are created.