PROBLEM TO BE SOLVED: To provide an operation terminal that allows a touch operation to a screen of a display unit to easily set a dimension serving as information required for setting a travelling route for execution of autonomous travelling.SOLUTION: A remote operation device 112 serving as an operation terminal enabling a setting of a left/right length, front/rear length, overlapping weight during work and the like of a work machine to be loaded to an autonomous travelling work vehicle 1 capable of automatically travel and work along a set travelling route R, in which the remote operation device 112 is capable of communication with a control device 30 of the autonomous travelling work vehicle 1 by communication devices 110 and 111, the remote operation device 112 comprises: a control device 119； and a display device 113. The display device 113 is configured to make a touch operation possible, and on a setting screen of the work machine, a schematic diagram of the work vehicle and the work machine is displayed. By an operation going over a display screen with a finger in the setting screen, a numeral expressing a length required for setting the work machine is changed, and at the same time, a size of a schematic image displayed is also changed.SELECTED DRAWING: Figure 5
