The invention discloses a swinging device for a digging bucket, which comprises an upper frame body (1) articulated with two pin shafts (8) on a machine body (2) through two pin shaft holes (13), wherein two oil cylinders (5) are arranged between the machine body (2) and the upper frame body (1), and cylinder body parts of the oil cylinders (5) are connected with the side wall of the upper frame body (1) through a pin shaft (15); a piston rod is articulated with a pin shaft (14) on the machine body (2); a pin shaft (8) on the machine body (2) and the pin shaft (14) are on the same plane, and the axial lines of the pin shaft (8) and the pin shaft (14) are parallel mutually; the machine body (2) is also provided with a hollow shaft (11), and a worm wheel (12) is rotationally sleeved on the hollow shaft (11) and fixedly connected with a lower frame body (4) through a bolt; one side of the machine body (2) is provided with a hydraulic motor (7) which is connected with a worm rod (9) through a spline; and the worm rod (9) is arranged on the lower part of the machine body (2) and engaged with the worm wheel (12). The swinging device ensures that the digging bucket not only can be rotated, but also can be swung relative to a bucket rod.