The present application discloses a rotating device and a display device, which relate to a field of electronic technologies. The rotating device includes: a first member including an anti-rotation groove and at least one first connecting portion; and a second member including an anti-rotation protrusion and at least one second connecting portion. The first connecting portion and the second connecting portion are rotationally connected, and the anti-rotation protrusion enters the anti-rotation groove to prevent the first connecting portion from rotating along a first direction with respect to the second connecting portion.