FUEL CELL

A fuel battery (11) includes unit cells (12), each of which includes a membrane electrode assembly (15) having two gas diffusion layers (19, 20). Gas passage forming bodies (31, 41) are stacked on an outer surface of each of the gas diffusion layers (19, 20) of each of the unit cells (12) so that each of the unit cells (12) includes a fuel gas passage (32) and an oxidant gas passage (132). Each of the gas passage forming bodies (31, 41) includes water guide passages (33, 133), each of which is located between adjacent ones of the gas passages (32, 132). A communication passage (36, 136) is arranged between each of the gas passages (32, 132) and an adjacent one of the water guide passages (33, 133) to guide water from the gas passage (32, 132) to the water guide passage (33, 133). The communication passage (36, 136) has a higher pressure loss than that of the gas passage (36, 136).