An object of the present invention is to provide a fuel cell having a structure capable of generating a large cell output power. According to the present invention, there is provided a fuel cell including an anode for oxidizing liquid fuel, a cathode for reducing oxygen, an electrolyte membrane provided between the above described anode and the above described cathode, a fuel chamber for holding liquid fuel to be fed to the anode, an exhaust gas module having a gas-liquid separation function arranged so as to permit ventilation between the inside and the outside of the fuel chamber.