To provide a methanol reforming catalyst converting all supplied methanol into hydrogen-containing gas, and reducing the generation amount of CO and increasing the amount of hydrogen.

In a methanol reforming catalyst system, a methanol steam reforming reaction catalyst or a partial oxidation reaction concurrently causing catalyst which concurrently causes a methanol steam reforming reaction and a partial oxidation reaction is disposed at the front side with respect to the flow direction of a methanol-containing fluid, and a methanol steam reforming reaction and methanol decomposition reaction concurrently causing catalyst is disposed at the rear side.