NOVELTY - A fuel cell system comprises an ignition unit, a recombination unit and a fuel cell unit. The ignition unit includes an igniting component for igniting the fuel to generate flame. The recombination unit comprises a combustion portion, an evaporation portion and a reaction portion. The combustion portion is connected to the ignition unit to receive fuel and to perform exothermic reaction. The reaction portion is connected to combustion portion and evaporation portion in order to receive the recombination raw material supplied by evaporation unit.    USE - Fuel cell system is used for power generation.    ADVANTAGE - The fuel cell system starts in short time without using extra power.    DETAILED DESCRIPTION - A fuel cell system comprises an ignition unit, a recombination unit and a fuel cell unit. The ignition unit includes igniting component for igniting the fuel to generate flame. The recombination unit comprises a combustion portion, an evaporation portion and a reaction portion. The combustion portion is connected to the ignition unit to receive fuel and to perform exothermic reaction. The evaporation portion is used to lead recombination raw material to the evaporation portion. The reaction portion is connected to combustion portion and evaporation portion in order to receive the recombination raw material supplied by evaporation unit and to perform recombination with heat generated by exothermal reaction to generate hydrogen. The fuel cell unit is connected to the reaction portion of recombination unit for receiving hydrogen supplied by the reaction portion to generate power. An INDEPENDENT CLAIM is included for operation of fuel cell system, which involves igniting fuel via an ignition component to generate flame, performing combustion exothermic reaction in combustion portion, supplying recombination raw material to evaporation portion in order to perform vaporization process, conducting the heat generated by exothermic reaction to the reaction portion, leading recombination raw material to the reaction portion to generate hydrogen after vaporizing, and leading hydrogen to the fuel cell unit for power generation.