Abstract: The safety of nuclear power is the pursued aim of nuclear power development.The hydrogen would be emitted in both accident and normal state,so the danger of H2 explosion exists.The dehydrogenation system of NPP is the most important nuclear safety equipment.One of the most important parts of the system is the catalyst of H2 combiner.Currently the type of dehydrogenation catalyst is supported noble metal catalyst.Whereas,the special characteristics of nano-composite material make it be the important research direction in catalyst field.In this paper the development status of H2 combiner has been studied,and according to studying direction of catalyst area,the development suggestion has been proposed.