NOVELTY - A hybrid hydrogen production system comprises a water electrolysis hydrogen production apparatus and a hydrogen separation type steam reforming device, where the water electrolysis hydrogen production apparatus uses water as a raw material, and the hydrogen separation type steam reforming device by the steam reforming of hydrocarbon fuel.    USE - The system is useful for producing hybrid hydrogen (claimed).    ADVANTAGE - The hybrid hydrogen production system is highly efficient in producing hydrogen, and effectively collects the carbon dioxides derived from hydrocarbon fuel.    DETAILED DESCRIPTION - A hybrid hydrogen production system comprises a water electrolysis hydrogen production apparatus and a hydrogen separation type steam reforming device, where the water electrolysis hydrogen production apparatus uses water as a raw material, and the hydrogen separation type steam reforming device by the steam reforming of hydrocarbon fuel, comprising a combustor which is a heat source for steam reforming of the hydrocarbon fuel, where the hybrid hydrogen production system which has a boiler for water steam generation of the hydrocarbon fuel for reformation, comprises: (a) the combustor is combustor by oxygen supplied from the water electrolysis hydrogen production apparatus; (b) where it introduces into water separator, after cooling off gas which is remaining gas after separating hydrogen from reformed gas from the hydrogen separation type steam reforming device, combustion exhaust gas from the combustor, and combustion exhaust gas from boiler for water steam generation of the hydrocarbon fuel for reformation and making one merge; (c) it separates into water content and gas in the merging gas in the water separator; (d) gas separated with the water separator is introduced into gas-liquid separation tank through water-content adsorber, compressor, and heat-of-cooling exchanger one by one, and it separates into liquid dioxycarbon and carbon-dioxide separation completed off gas; and (e) while recovering separated liquid dioxycarbons, it comes to utilize carbon-dioxide separation completed off gas as a fuel in the combustor.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a hybrid hydrogen production system.    Hydrogen separation type steam reforming device (A)    Combustor which is heat source for steam reforming of hydrocarbon fuel (B)    Boiler for water steam generation of hydrocarbon fuel for reformation (C)    Water separator (D)    Water-content adsorption tower (E)    Gas-liquid separation tank (G)    Tank (H)    Neutralizer (I)    Dehumidifying apparatus (X)    Water electrolysis hydrogen production apparatus (W)    Carbon-dioxide liquefaction recovery apparatus (Z)    Conduit pipe (1-19A)    Heat exchanger (K1-K4)    Heat-of-cooling exchanger (K5)    Compressor (P1-P2)    Buffer tank (Y1, Y2)