Naked-eye three-dimensional display device

The invention provides a naked-eye three-dimensional display device. The naked-eye three-dimensional display device comprises a directional screen, projectors and a rotary motor, wherein the direction screen is composed of Fresnel lenses and an optical grating, the projectors project images right towards the directional screen, the directional screen is driven by the rotary motor to rotate around a vertical rotary shaft arranged outside the directional screen, and the directional screen is obliquely arranged so that the negative parallax of an image can be formed. According to the naked-eye three-dimensional display device, on one hand, the directional screen is obliquely arranged, the negative parallax of the image is formed, the image is formed in front of the directional screen, the image can be suspended and touched, high man-machine interaction is achieved, and the original appearance of an object is well represented due to the fact that multiple parallax images can be provided by the directional screen; on the other hand, the directional screen is driven by the rotary motor to rotate, in this way, the image can be seen in all directions and can be seen by multiple persons at the same time.