PURPOSE: To utilize methane as well as methanol as fuel, and to achieve high heat efficiency by filling a catalyst for suppressing methanation reaction on a catalyst layer in the vicinity of a mixed gas entrance of a reforming unit.

CONSTITUTION: Since a Cu-Ni catalyst 52 is filled in the vicinity of a mixed gas entrance 43 of a reforming unit 25, methanation reaction is suppressed. As a result, generation of methane of high reforming temperature is suppressed, and methanol of low reforming temperature is directly reformed into hydrogen rich gas. When methane is selected as a fuel to be used, a mixed gas including methane passes without being affected by the catalyst 52 in the vicinity of the entrance 43 of the reforming unit 25, and is reformed into hydrogen rich gas under a Ni catalyst 53 filled on the catalyst 52. Since an exhausted fuel to be fed to a reforming unit banner is effectively utilized by an auxiliary banner, a fuel cell power generation plant of excellent heat efficiency as a whole can thus be obtained.