A fuel cell module comprising: a fuel cell stack formed by stacking a plurality of fuel cells for generating electricity by electrochemical reactions of a fuel gas and an oxygen-containing gas; a reformer for producing the fuel gas supplied to the fuel cell stack; a heat exchanger for raising a temperature of the oxygen-containing gas by heat exchange with a combustion gas, and supplying the oxygen-containing gas to the fuel cell stack; an exhaust gas combustor for combusting the fuel gas discharged from the fuel cell stack as a fuel exhaust gas and the oxygen-containing gas discharged from the fuel cell stack as an oxygen-containing exhaust gas to produce the combustion gas; and a start-up combustor for combusting the raw fuel and the oxygen-containing gas to produce the combustion gas, wherein the start-up combustor is provided coaxially inside a partition member provided between two areas (R1, R2) of the fuel cell module, the partition member having a combustion gas hole for allowing combustion gas to flow therethrough, characterized in that the reformer is configured to reform a mixed gas of water vapor and a raw fuel chiefly containing hydrocarbon; and the fuel cell module further comprises an evaporator for evaporating water, and supplying the water vapor to the reformer; wherein the fuel cell module includes: a first area where the exhaust gas combustor and the start-up combustor are provided; an annular second area around the first area where one of the reformer and the heat exchanger is provided; an annular third area around the second area where another of the reformer and the heat exchanger is provided; an annular fourth area around the third area where the evaporator is provided; and the partition member provided between the first area and the second area, the combustion gas hole allowing the combustion gas to flow from the first area to the second area, wherein the exhaust gas combustor and the start-up combustor are provided coaxially inside the partition member; the exhaust gas combustor is provided adjacent to one end of the partition member closer to the fuel cell stack; the start-up combustor is provided adjacent to another end of the partition member opposite to the fuel cell stack; and a combustion gas flow limiting member (61, 130) is provided between the exhaust gas combustor and the start-up combustor for limiting flow of the combustion gas from the exhaust gas combustor to the start-up combustor or flow of the combustion gas from the start-up combustor to the exhaust gas combustor. a fuel cell stack formed by stacking a plurality of fuel cells for generating electricity by electrochemical reactions of a fuel gas and an oxygen-containing gas; a reformer for producing the fuel gas supplied to the fuel cell stack; a heat exchanger for raising a temperature of the oxygen-containing gas by heat exchange with a combustion gas, and supplying the oxygen-containing gas to the fuel cell stack; an exhaust gas combustor for combusting the fuel gas discharged from the fuel cell stack as a fuel exhaust gas and the oxygen-containing gas discharged from the fuel cell stack as an oxygen-containing exhaust gas to produce the combustion gas; and a start-up combustor for combusting the raw fuel and the oxygen-containing gas to produce the combustion gas, the reformer is configured to reform a mixed gas of water vapor and a raw fuel chiefly containing hydrocarbon; and the fuel cell module further comprises an evaporator for evaporating water, and supplying the water vapor to the reformer; a first area where the exhaust gas combustor and the start-up combustor are provided; an annular second area around the first area where one of the reformer and the heat exchanger is provided; an annular third area around the second area where another of the reformer and the heat exchanger is provided; an annular fourth area around the third area where the evaporator is provided; and the partition member provided between the first area and the second area, the combustion gas hole allowing the combustion gas to flow from the first area to the second area, wherein the exhaust gas combustor and the start-up combustor are provided coaxially inside the partition member; the exhaust gas combustor is provided adjacent to one end of the partition member closer to the fuel cell stack; the start-up combustor is provided adjacent to another end of the partition member opposite to the fuel cell stack; and a combustion gas flow limiting member (61, 130) is provided between the exhaust gas combustor and the start-up combustor for limiting flow of the combustion gas from the exhaust gas combustor to the start-up combustor or flow of the combustion gas from the start-up combustor to the exhaust gas combustor.