NOVELTY - The solid polymer electrolyte fuel cell useful in a vehicle, comprises an electrolyte (23), an anode (22) having a fuel gas consumption surface placed on one side of the electrolyte, a cathode (24) having an oxidant gas consumption surface placed on the other side of the electrolyte, and a fuel gas passage. The fuel gas passage includes a first passage for distributing fuel gas to set regions on the fuel gas supply surface, a second passage for supplying the distributed fuel gas to the regions, and a portion for supplying fuel gas from the first to second passage.    USE - The solid polymer electrolyte fuel cell is useful in a vehicle (claimed).    ADVANTAGE - The fuel cell can operate at low temperatures, and increases the pressure of the fuel gas thus reducing the size, the weight and the diffusion speed of the fuel system and increasing the power of the fuel system of the vehicle.    DETAILED DESCRIPTION - The solid polymer electrolyte fuel cell useful in a vehicle, comprises an electrolyte (23), an anode (22) having a fuel gas consumption surface placed on one side of the electrolyte, a cathode (24) having an oxidant gas consumption surface placed on the other side of the electrolyte, and a fuel gas passage. The fuel gas passage includes a first passage for distributing fuel gas to set regions on the fuel gas supply surface, a second passage for supplying the distributed fuel gas to the regions, and a portion for supplying fuel gas from the first to the second passage. The fuel cell consumes most of the supplied fuel gas in the regions on the fuel gas consumption surface. The fuel gas passage has a portion for suppressing leakage fuel gas between the first and second passages. The first and the second passages are formed by a porous member. The fuel gas leakage suppression portion is formed as a peripheral portion of the porous member that has a porosity lower than a porosity of an inner portion of the porous member by impregnating the peripheral portion of the porous member with a gasket material. The fuel gas leakage suppression portion is a member that is formed in a body, which extends to a part of a peripheral portion of the first passage and the second passage, or a spacer that is disposed on a side of the fuel gas supply portion, and provides the first passage or the second passage. The first passage and the second passage have a honeycomb structure. INDEPENDENT CLAIMS are included for:    (1) a vehicle equipped with a fuel cell; and    (2) a membrane electrode unit.    DESCRIPTION OF DRAWING(S) - The diagram shows a fuel gas passage of a fuel cell.    Anode (22)    Electrolyte (23)    Cathode (24)    Cathode-side separator (41)    Anode-side separator. (43)