Each of separators for sandwiching a plurality of electrolyte electrode assemblies includes a pair of plates. A fuel gas channel and an oxygen-containing gas channel are formed between the plates. A fuel gas supply hole extends through the separators for supplying a fuel gas, and discharge passages are formed around the fuel gas supply hole. The discharge passages extend through the separators for discharging an exhaust gas. The separator has a fuel gas distribution passage for connecting the fuel gas supply hole and the fuel gas channel.