Catalyst structure, the reactor, and method for producing a catalyst structure

The catalyst structure (300) is provided in the fluid reaction side flow path of the reactor with a reaction side channel for flowing as the reaction target was stretched in a direction intersecting the flow direction of the fluid in the reaction-side flow path It includes a plurality of pin rod pillar shape (310), supported on the surface of the pin rod (310), a catalyst to accelerate the reaction of the reaction fluid.