An integrated imaging display system, comprising: a display device, and a polarization converting element and an optical path folding element which are on a light emitting side of the display device, wherein the polarization converting element is configured to convert light emitted from the display device into first linearly polarized light in a first polarization state and second linearly polarized light in a second polarization state, the first polarization state being different from the second polarization state; characterized in that the integrated imaging display system further comprises a micro-lens array on a light emitting side of the display device, the polarization converting element, the optical path folding element, and the micro-lens array being sequentially disposed in a direction away from the display device; the optical path folding element is configured to transmit the first linearly polarized light to the micro-lens array according to a first transmission path, and transmit the second linearly polarized light to the micro-lens array according to a second transmission path, the first transmission path having a greater length than the second transmission path; and the micro-lens array is configured to form a first three-dimensional display image in a first depth-of-field range based on the first linearly polarized light, and form a second three-dimensional display image in a second depth-of-field range based on the second linearly polarized light, wherein a first distance between a central depth plane of the first depth-of-field range and a light emitting surface of the display device is shorter than a second distance between a central depth plane of the second depth-of-field range and the light emitting surface of the display device; wherein the micro-lens array comprises a plurality of micro-lenses, and the optical path folding element comprises a plurality of optical path folding units corresponding to the micro-lenses one by one, an orthographic projection of the optical path folding unit on the light emitting surface coinciding with an orthographic projection of the corresponding micro-lens on the light emitting surface; and the optical path folding unit is configured to transmit the first linearly polarized light to the corresponding micro-lens according to the first transmission path, and transmit the second linearly polarized light to the corresponding micro-lens according to the second transmission path. characterized in that the integrated imaging display system further comprises a micro-lens array on a light emitting side of the display device, the polarization converting element, the optical path folding element, and the micro-lens array being sequentially disposed in a direction away from the display device; the optical path folding element is configured to transmit the first linearly polarized light to the micro-lens array according to a first transmission path, and transmit the second linearly polarized light to the micro-lens array according to a second transmission path, the first transmission path having a greater length than the second transmission path; and the micro-lens array is configured to form a first three-dimensional display image in a first depth-of-field range based on the first linearly polarized light, and form a second three-dimensional display image in a second depth-of-field range based on the second linearly polarized light, wherein a first distance between a central depth plane of the first depth-of-field range and a light emitting surface of the display device is shorter than a second distance between a central depth plane of the second depth-of-field range and the light emitting surface of the display device; wherein the micro-lens array comprises a plurality of micro-lenses, and the optical path folding element comprises a plurality of optical path folding units corresponding to the micro-lenses one by one, an orthographic projection of the optical path folding unit on the light emitting surface coinciding with an orthographic projection of the corresponding micro-lens on the light emitting surface; and the optical path folding unit is configured to transmit the first linearly polarized light to the corresponding micro-lens according to the first transmission path, and transmit the second linearly polarized light to the corresponding micro-lens according to the second transmission path.