To eliminate a need for modifying a work vehicle, make an existing work vehicle capable of being remotely controlled with ease, and also make remote control simple when the controlled operating part of the work vehicle is held and the like by an operating means.

The respective driving motors 202D, 204 and 202E (202F and 202G) and a driving part are drivingly controlled based on angular data detected by respective angle sensors 403I, 405 and 403J (403K, 403L and 403M) for a multi-joint operating arm 403 by fixing a work robot 20 having a multi-joint arm 202 to the driver's seat of a work vehicle, and operating a rest lever 402 and the like, which are set at an operator's seat 70 for a monitor center 50. Besides, respective sensors 202I, 204A, and 202J (202K and 202L) and a sensor 202M, allow the multi-joint operating arm 403 to be controlled while the quantity of movement detected when the controlled operating part of the multi-joint arm 202 is moved to its disposition place, is being taken as teaching data.