The invention relates to a metal/H-MCM-22 catalyst. Firstly complexation reaction is carried out on ions of metal components and organic amine to generate complexes of metal ions, subsequently an aluminum source, a silicon source and a template agent are added, and gel forming and crystallization are carried out to generate the metal/H-MCM-22 catalyst. According to the invention, active metals directly participate in a molecular sieve skeleton construction process and enter channels of molecular sieves, so that the defects in the prior art that the channels of the molecular sieves can be extremely easily blocked and catalyst activity is reduced as mechanical mixing is adopted are avoided; catalytic active sites of the catalyst provided by the invention are highly uniformly distributed, so that conversion rate of benzene and cyclohexylbenzene selectivity are both higher when the catalyst is applied to benzene hydrogenation alkylation reaction; and the catalyst is simple in production process, good in repeatability and easy in industrialized enlargement.