To provide a decoration device provided with an excellent decorative effect even though it has a simple structure.

This device is provided with a driving means 42 for rotationally driving a drive shaft 41, a rotation member 43 pivotally attached to the drive shaft 41 and provided with engaging parts 431 and 432 and swing bodies 44 and 45 provided with parts 44b and 45b to be engaged by the engaging parts 431 and 432 provided on the rotation member 42. When the drive shaft 41 is rotationally driven by the driving means 42, the swing bodies 44 and 45 are rotationally driven with the swing shafts 44a and 45a of the swing bodies 44 and 45 as centers in the case that the engaging parts 431 and 432 are engaged to the parts 44b and 45b to be engaged and are swung by a prescribed swing cycle with the swing shafts 44a and 45a as the centers in the case that the engaging parts 431 and 432 are not engaged with the parts 44b and 45b to be engaged.