The present invention provides an industrial vehicle having a hybrid system capable of readily controlling a distribution of power generated by an engine and power generated by an electric motor, and a method of controlling; the power of the same. A hybrid industrial vehicle includes an engine for supplying power to one of a running unit and a loading-and-unloading unit; a first motor for supplying power to one of the running unit and the loading-and-unloading unit; a second motor for supplying power to the running unit; a required-power calculating unit for calculating running power, and loading-and-unloading power; a clutch unit for controlling the power transmitted from the engine to the running unit; and a power-distribution calculating unit for selecting a destination to be supplied with power form the engine and the first motor based on the control status of the clutch unit, and for calculating a distribution of power which the engine, the first motor, and the second motor supply based on the calculated running power and loading-and-unloading power.