FUEL CELL

PROBLEM TO BE SOLVED: To prevent a gas guiding member from being deformed by heat to avoid breakage of a cell stack and reduction in its reliability, and also prevent reduction in output and efficiency.SOLUTION: In a fuel cell of the present invention, a cell stack 10 consisting of a plurality of cell units 11 laminated one on another leaving a space between each are accommodated in a case 40, while also a gas introduction part 50 which introduces reaction gas into the case 40, a gas exhaust part for ejecting the reaction gas from inside the case 40, and gas guiding members 20, 20 extending along the outer peripheral edge part of the cell stack 10 from the gas introduction part 50 are installed, whereby a gas circulation path α for letting the reaction gas circulate between the gas guiding members 20, 20 and the case 40 is demarcated. The fuel cell includes a gas discharge port 35 for discharging the reaction gas introduced from the gas introduction part 50 toward the gas circulation path α and also has a gas discharge body B of monocoque construction integrally provided on the outer faces of the gas guiding members 20, 20.