To provide a work vehicle that allows a work apparatus to be continuously driven by electric power to improve quietness thereof.

The work vehicle is designed to drive a hydraulic pump 31 by power of a motor generator 41b driven by electric power from an external power source supplied through a power cable 41f. This enables the hydraulic pump 31 to be continuously driven by power of the motor generator 41b when work using a crane device 20 is conducted in a work place having the external power source, thereby allowing the work by the crane device 20 with superior quietness to be continued.