NOVELTY - Reformer-integrated evaporator comprises an oxidation catalyst (20) heated by the combustion flame formed by an igniter and located facing downwards a reformer (10), a burner (30) positioned on reformer upper portion, a cylinder with annulus section opened with holes at center to ensure that burner penetrates cylinder and coincides with reformer direction; and an evaporation apparatus (50) in which waste heat of combustion gas is supplied from outer side of reformer and reformed fuel exchanges heat with water.    USE - Used as a reformer-integrated evaporator.    ADVANTAGE - The evaporator and the fuel cell system are integrated with the reformer, and the burner is embedded in the cylinder, and thus the evaporator and the fuel cell system utilize reformer without burner installation space and ensure a compact structure.    DETAILED DESCRIPTION - Reformer-integrated evaporator comprises an oxidation catalyst (20) heated by the combustion flame formed by an igniter and located facing downwards a reformer (10), a burner (30) positioned on the reformer upper portion, a cylinder with annulus section opened with holes at the center to ensure that the burner penetrates the cylinder and coincides with the reformer direction; where the combustion flame generated by burner has short end tip region when the burner is in the penetrating state; and an evaporation apparatus (50) in which waste heat of the combustion gas is supplied from outer side of the reformer and the reformed fuel exchanges heat with water. An INDEPENDENT CLAIM is also included for a fuel cell system comprising an oxidation catalyst heated by the combustion flame formed by an igniter and located facing downwards a reformer, a burner positioned on the upper portion of the reformer, a cylinder with the annulus section opened with holes at the center to ensure that the burner penetrates the cylinder and coincides with the direction of the reformer; where the combustion flame generated by the burner has short end tip region when the burner is in the penetrating state; an evaporation apparatus, where the waste heat of the combustion gas is supplied from outside of the reformer and the reformed fuel exchanges heat with water, and a fuel cell stack, which conveys unused hydrogen to a gas nozzle which is located below the oxidation catalyst to recirculate, where the hydrogen is generated from the reforming catalyst in the reformer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the fuel cell system containing the reformer-integrated evaporator (Drawing includes non-English language text).    Reformer (10)    Oxidation catalyst (20)    Counter-current barrier (21)    Burner (30)    Evaporation apparatus (50)