A fuel cell that includes a membrane-electrode assembly and separation plates disposed on both sides of the membrane-electrode assembly is provided. The fuel cell includes barrier ribs formed in reaction surfaces of the separation plates corresponding to the membrane-electrode assembly and configured to partition the reaction surfaces into a plurality of reaction regions. A micropore body is installed between the separation plate and the membrane-electrode assembly. The micropore body includes porous units disposed in the reaction region, and a connection unit integrally coupled to the porous units and flatly contacts the barrier ribs.