The continuous production of hydrogen from tetraliydronaphtlialene (1) is achieved effectively using Pd/ACF catalysts (where ACF is activated carbon fiber) in a common fixed-bed flow reactor. Thus, the reaction efficiency is almost five times higher than that in a batch reactor under similar reaction conditions. Furthermore, cyclohexane (3) and decahydronaphthalene (4) can also be used as a hydrogen source in the reaction system.