Catalyst structure, reactor, and manufacturing method for catalyst structure

A catalyst structure (300) is provided in a reaction-side flow path of a reactor provided with the reaction-side flow path through which a fluid as a reaction object flows, and is provided with a plurality of pillar-shaped pin rods (310) which extend in a direction crossing the flow direction of the fluid in the reaction-side flow path, and a catalyst which is supported on the surfaces of the pin rods (310) and accelerates the reaction of the reaction fluid.