To confirm the body width or the wheels of a trailer and the rear part of the trailer from a driver's seat visually and through a back mirror or the like by providing a driver's cab part on the front body movably in the vehicle width direction.

When a cargo handling vehicle 1 runs on a narrow road, the driver operates the operation lever of a driver's seat so as to move the driver's cab part 4 in the vehicle width direction, and confirms the rearward from the driver's seat visually or through a back mirror 25 or the like, so that a trailer is not contacted with a structure on the side of the narrow road, or wheels do not fall off. When the cargo handling vehicle 1 is retrated, the driver similarly operates the operation lever so as to move the driver's cab part 4 in the vehicle width direction, and determines the retreating position while confirming the outside of the rear part of the trailer 5 or the rear wheels visually or through the back mirror 25 or the like.