To supply a fuel without using an accessory gear box and a gear pump having a large weight by using a centrifugal pump to discharge the fuel by driving a motor as a pump.

A fuel supplying device mainly comprising a centrifugal pump 19 in which a booster pump for supplying a fuel to a combustion chamber 5 and applying a previous pressure to an internal fuel and an electric motive motor 23 are integrally formed; a fuel weighting device 20 and an electric controller FADEC 16 is provided on a gas turbine. The supplying device can be made to a light since the centrifugal pump 19 can be rotated at a high speed and a size of the pump itself is small. The centrifugal pump 19 can easily obtain the combustion chamber 5 having a plurality of injection ports in one pump by branching the fuel discharged since a discharge pressure of the fuel is constant. Since the fuel weighing devices 20 are provided in every branched tubular passages C3, a fuel control to the combustion chamber 5 can be independently carried out in every tubular passages C3 corresponding to a circumstance.