NOVELTY - A hydrogen containing gas generation apparatus comprises containers which form process space which processes fluid and arranged in close state, container for water vapor production parts which has water vapor production part which heats supplied water and produces water vapor, container for steam reforming part which has steam reforming part that produces reformed gas with water vapor in water vapor production part, and container for denaturation process part which carries out denaturation process of carbon monoxide gas in reformed gas produced in steam reforming part at carbon dioxide gas.    USE - A hydrogen containing gas generation apparatus.    ADVANTAGE - Overheating of container for denaturation process part is prevented. Size and cost of the apparatus are reduced.    DETAILED DESCRIPTION - A hydrogen containing gas generation apparatus comprises containers which form process space which processes fluid and arranged in close state, container for water vapor production parts (3) which has water vapor production part which heats supplied water and produces water vapor, container for steam reforming part (5) which has steam reforming part that produces reformed gas with water vapor in water vapor production part, container for denaturation process part (6) which carries out denaturation process of carbon monoxide gas in reformed gas produced in the steam reforming part at carbon dioxide gas, container for water pre-heating part which pre-heats water supplied to water vapor production part by fluid for pre-heating as container that forms apparatus main body is provided, container for water pre-heating parts which are arranged adjacent to the container for the denaturation process parts in the row direction of the container.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of the apparatus main body in hydrogen containing gas generation apparatus. (Drawing includes non-English language text).    Apparatus main body (1)    Water vapor production parts (3)    Combustion part (4)    Steam reforming part (5)    Denaturation process part (6)