An outlet device provides vortex rotating water and includes a diverter having a side surface disposed with at least two spiral accelerating grooves extending along an axial direction and having a bottom surface disposed with a collision chamber, the at least two spiral accelerating grooves being evenly arranged about an axis of the collision chamber and having respective ends that connect to the side walls of the collision chamber; and an outlet body disposed with an accommodating chamber and a vortex rotating chamber connected to each other in the axial direction. The diverter is disposed in the accommodating chamber. The vortex rotating chamber is a dome shaped body having a flat end face that is connected to a bottom end of the accommodating chamber and has an external protruding surface. The outlet body has an outlet connected to the external protruding surface of the vortex rotating chamber.