NOVELTY - Integrated reformer comprises e.g. a heating channel for recovering heat from high-temperature exhaust gas supplied from bottom, a humidification chamber for converting fuel and water into mixed gas while exchanging exhaust gas heat of heating channel, multiple reforming units alternately arranged along transverse direction between two lateral protective plates and formed with a reaction channel and a reforming reaction chamber for generating hydrogen gas from mixed gas, and a water inlet unit formed with multiple injection pipes for supplying water into reaction channel.    USE - The reformer is useful in fuel cell system (claimed).    ADVANTAGE - The reformer slow downs moving speed of mixed gas, increases heat exchange time of exhaust gas, reduces size of fuel cell system and costs of recovering heat, has simple structure, and does not require additional external heat source.    DETAILED DESCRIPTION - Integrated reformer comprises a heating channel for recovering heat from high-temperature exhaust gas discharged from the upper portion and supplied from the bottom, a humidification chamber for converting a fuel and water into mixed gas while exchanging the exhaust gas heat of the heating channel, multiple reforming units (10) alternately arranged along the transverse direction between two lateral protective plates and formed with a reaction channel and a reforming reaction chamber for generating hydrogen gas from mixed gas, a water inlet unit (40) formed with multiple injection pipes for supplying water into the reaction channel and is placed on the upper side of the reforming unit, a fuel inlet portion (50) for supplying fuel into the reaction channel and located at a position lower than the water inlet portion and is arranged on the other side of the reforming unit, a mixed gas moving unit (60) for moving the mixed gas converted in the humidification chamber of the reaction channel into the reforming unit and arranged on the other side of the reforming unit, a hydrogen gas discharging unit (70) for discharging hydrogen gas generated from the reaction channel of the reforming unit and placed on the side lower portion of the reforming unit, and a catalyst discharge port for introducing and discharging catalyst into the reaction channel by opening and closing a cover and located at a position upper than the hydrogen gas discharging unit and on the other side lower portion of the reforming unit.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the integrated reformer.    Reforming unit (10)    Water inlet unit (40)    Fuel inlet portion (50)    Mixed gas moving unit (60)    Hydrogen gas discharging unit (70)