To provide a control device for a working vehicle capable of certainly preventing theft of the working vehicle without using an unload valve.

The control device for the working vehicle mounted with a working machine driven by a hydraulic actuator is provided with a switch means for setting an antitheft mode; and an output restriction means for restricting output of a control signal to a control valve for performing switching of an operation direction of the hydraulic actuator so long as it does not receive an antitheft mode release signal from the switch means when the antitheft mode is set. According to such a constitution, if setting of the antitheft mode is performed at storage of the working vehicle, even if any operation aiming at theft is performed during storage, so long as it does not receive the release signal of the antitheft mode, output of the control signal to the control valve of the hydraulic actuator is restricted by the output restriction means, thereby, theft of the working vehicle is certainly prevented.