PROBLEM TO BE SOLVED: To provide a work vehicle, at low cost, which can be safely traveled on a slope by easily and smoothly executing tilt control of a traveling machine body during travel on the slope without using an actuator which has high responsiveness and is large-sized, and by configuring the tilt control of the traveling machine body at lower cost, the work vehicle being capable of tilting the traveling machine body back and forth.SOLUTION: The work vehicle includes condition detection means which starts the back/forth tilt control in response to detecting a predetermined condition, and a control section. The control section executes the tilt control in which the traveling machine body is switched to a determined front-downward attitude tilted downwards to a front side when upward slope travel control is started in response to detecting the predetermined condition by the condition detection means, and on the other hand, the traveling machine body is switch to a determined front upward attitude inclined forwards to an upper side when downward slope travel control is started in response to detecting the predetermined condition by the condition detection means.
