A solid polymer fuel cell includes a solid polymer electrolytic membrane 1, an anode 2 contacting one of the faces of the solid polymer electrolytic membrane 1, a cathode 3 contacting the other face of the solid polymer electrolytic membrane 1, and a gas-liquid separation membrane 4 enclosing a MEA 12 including the solid polymer electrolytic membrane 4, the anode 2, and the cathode 3, and which transmits gas but not liquid. An end face of the gas-liquid separation membrane 1 is sealed, and the MEA 12 is isolated from outside of the gas-liquid separation membrane 4. The anode 2 and the cathode 3 respectively include an electrode terminal extending from an end portion thereof, and the electrode terminal is exposed to outside of the gas-liquid separation membrane 4, through an end portion thereof. With such structure, a fuel is supplied in a form of vapor to the anode 2 through the gas-liquid separation membrane 4 opposing the anode 2, and a reaction product from the anode 2 is discharged through the gas-liquid separation membrane 4 located on a lateral side of the anode 2, and at least oxygen is supplied to the cathode 3 through the gas-liquid separation membrane 4 opposing the cathode 3.