A working vehicle, comprising: a steering device having a steering handle; a vehicle body configured to travel with either manual steering by the steering handle or automatic steering of the steering handle based on a traveling-reference line; a positioning device configured to detect an orientation of the vehicle body; a display device including: a line orientation display portion configured to indicate an orientation of the traveling reference line; a vehicle orientation display portion configured to indicate the orientation of the vehicle body; and an orientation scale portion having a reference point that coincides with the orientation of the traveling reference line and being configured to increase and decrease a value indicating the orientation of the traveling reference line based on a distance from the reference point; and a controller device configured to permit the automatic steering by the steering device when an orientational difference (ΔF) which is a difference between the orientation of the vehicle body detected by the positioning device and the orientation of the traveling reference line is within a judgment range and to perform the automatic steering by the steering device when permitting the automatic steering, the working vehicle being characterized by comprising: an inclination detector device configured to detect an inclination of the vehicle body in a width direction, wherein the orientation scale portion is configured to show the judgment range, the controller device is configured to change the judgment range in accordance with the inclination of the vehicle body in the width direction detected by the inclination detector device, and the orientation scale portion is configured to, when the judgment range is changed in accordance with the inclination of the vehicle body in the width direction, show the changed judgment range. a steering device having a steering handle; a vehicle body configured to travel with either manual steering by the steering handle or automatic steering of the steering handle based on a traveling-reference line; a positioning device configured to detect an orientation of the vehicle body; a display device including: a line orientation display portion configured to indicate an orientation of the traveling reference line; a vehicle orientation display portion configured to indicate the orientation of the vehicle body; and an orientation scale portion having a reference point that coincides with the orientation of the traveling reference line and being configured to increase and decrease a value indicating the orientation of the traveling reference line based on a distance from the reference point; and a controller device configured to permit the automatic steering by the steering device when an orientational difference (ΔF) which is a difference between the orientation of the vehicle body detected by the positioning device and the orientation of the traveling reference line is within a judgment range and to perform the automatic steering by the steering device when permitting the automatic steering, the working vehicle being characterized by comprising: an inclination detector device configured to detect an inclination of the vehicle body in a width direction, wherein the orientation scale portion is configured to show the judgment range, the controller device is configured to change the judgment range in accordance with the inclination of the vehicle body in the width direction detected by the inclination detector device, and the orientation scale portion is configured to, when the judgment range is changed in accordance with the inclination of the vehicle body in the width direction, show the changed judgment range. an inclination detector device configured to detect an inclination of the vehicle body in a width direction, wherein the orientation scale portion is configured to show the judgment range, the controller device is configured to change the judgment range in accordance with the inclination of the vehicle body in the width direction detected by the inclination detector device, and the orientation scale portion is configured to, when the judgment range is changed in accordance with the inclination of the vehicle body in the width direction, show the changed judgment range.