This display screen turning apparatus includes a turntable mounted with a display body and rotatable in a horizontal plane, a base, rotatably holding the turntable, provided with a drawn projecting portion and a floating prevention member so mounted on the projecting portion of the base as to prevent the turntable from upward floating. The floating prevention member has a floating prevention portion provided above a region where the upper surface of the turntable is arranged, a mounting portion for mounting the floating prevention member on the projecting portion and a leg portion provided between the floating prevention portion and the mounting portion for maintaining the base and the floating prevention member at a prescribed interval by coming into contact with the base.