To provide a lifting/rotating device for a bucket capable of lifting the bucket to intended height and inverting it to discharge held objects and of effectively discharging the held objects by applying inertia force upwardly in the height direction of the bucket to the held objects at the time of discharge.

This lifting/rotating device for the bucket 1 is provided with a stopper 30b suppressing rise in a slider in predetermined height position; arc claw-shaped members 22a, 22b integrally provided with the slider; a claw hooked body 31 fixedly arranged in a height position separated upwardly from the stopper 30b by a distance nearly equal to or larger than the radius of the arc of the claw-shaped members 22a, 22b rotated around the slider and supporting load when the claw-shaped members 22a, 22b abut on the claw hooked body 31; a supporting mechanism supporting the bucket 1 such that the bucket 1 can be lifted/rotated; a lifting mechanism; and connection members 3a, 3b of which one ends are rotatably connected with the approximate intermediate position of the vertical direction of the supporting mechanism and the other ends are rotatably assembled into the lifting mechanism. The slider and the claw-shaped members 22a, 22b are integrally fixed with respect to the upper position of the supporting mechanism.