A rotating apparatus for a winding reel of a high-pressure cleaner, including a rotating wheel with a slideway, a slider and a handle mounted on the slider, said slider slides in the slideway, the slider has a first working position that fixes the entire slider in the rotating wheel and a second working position that makes the slider partly in the rotating wheel. When the slider is at the second working position, the arm of force is increased without occupying more space. When the rotating apparatus is not in use, the handle is placed in concave portion. Compared with conventional rotating apparatuses, the rotating apparatus is foldable, occupies less space, makes the whole body of the high-pressure cleaner beautiful, convenient to operate, and suitable for popularizing with high-pressure cleaners, and with similar devices.