A fuel cell module (130; 230), comprising: a fuel cell including a plurality of cells (43a1a) that are stacked with one another in a first direction, the fuel cell being formed with an anode gas flow passage at an inner portion of the fuel cell, the anode gas flow passage sending an anode gas from a first end of the anode gas flow passage to a second end of the anode gas flow passage in a second direction that is orthogonal to the first direction, the fuel cell being formed with a cathode gas flow passage at the inner portion of the fuel cell, the cathode gas flow passage sending a cathode gas from the first end to the second end, the fuel cell generating an electric power by the anode gas and the cathode gas; a cathode gas introduction member being provided at a first side of the fuel cell, the cathode gas introduction member including an outlet opening towards the first end of the fuel cell, the cathode gas introduction member sending the cathode gas from the outlet to the cathode gas flow passage; a wall member (45a, 45b) being provided at a second side of the fuel cell, the wall member (45a, 45b) being spaced apart from the fuel cell; a first flow passage being formed between the fuel cell and the wall member (45a, 45b), the first flow passage communicating with the cathode gas flow passage, the first flow passage sending the cathode gas from the first end to the second end; and a first flow block member (147; 247a) being provided within the first flow passage, the first flow block member (147; 247a) being provided at the second end relative to an intermediate position of the first flow passage in the second direction, the first flow block member (147; 247a) blocking the cathode gas flowing in the first flow passage, characterized in that the first flow block member (147; 247a) is provided over a whole length of an intermediate portion of the fuel cell other than opposing end portions of the fuel cell in the first direction. a fuel cell including a plurality of cells (43a1a) that are stacked with one another in a first direction, the fuel cell being formed with an anode gas flow passage at an inner portion of the fuel cell, the anode gas flow passage sending an anode gas from a first end of the anode gas flow passage to a second end of the anode gas flow passage in a second direction that is orthogonal to the first direction, the fuel cell being formed with a cathode gas flow passage at the inner portion of the fuel cell, the cathode gas flow passage sending a cathode gas from the first end to the second end, the fuel cell generating an electric power by the anode gas and the cathode gas; a cathode gas introduction member being provided at a first side of the fuel cell, the cathode gas introduction member including an outlet opening towards the first end of the fuel cell, the cathode gas introduction member sending the cathode gas from the outlet to the cathode gas flow passage; a wall member (45a, 45b) being provided at a second side of the fuel cell, the wall member (45a, 45b) being spaced apart from the fuel cell; a first flow passage being formed between the fuel cell and the wall member (45a, 45b), the first flow passage communicating with the cathode gas flow passage, the first flow passage sending the cathode gas from the first end to the second end; and a first flow block member (147; 247a) being provided within the first flow passage, the first flow block member (147; 247a) being provided at the second end relative to an intermediate position of the first flow passage in the second direction, the first flow block member (147; 247a) blocking the cathode gas flowing in the first flow passage, characterized in that the first flow block member (147; 247a) is provided over a whole length of an intermediate portion of the fuel cell other than opposing end portions of the fuel cell in the first direction.