A fuel cell (11) includes a separator (28) having a circular disk (36). On one surface (36a) of the circular disk (36), a fuel gas channel (46) for supplying a fuel gas to an anode (24) is provided, and on the other surface (36b) of the circular disk (36), an oxygen-containing gas channel (70) for supplying air to a cathode (22) is provided. The fuel gas channel (46) has an end point disposed at the outer circumferential end of the anode (24). A fuel gas discharge channel (68) is connected to the end point of the fuel gas channel (46), such that the consumed fuel gas is emitted from a position spaced outwardly from an outer circumferential portion of the electrolyte electrode assembly (26).