The invention relates to a catalyst which is use to eliminate hydrogen in nuclear power station, particularly in the closed space such as containing vessel in nuclear power station. The catalyst comprises a sheet metallic carrier, an active component of a plurality of noble metals, and an agent of Na, K, Cr element and rare-earth metal. The experiment expresses that the metallic carrier type catalyst has high dehydrogenation efficiency, long life time, and good moisture retardant property.