Disclosed are a 3D display panel and the 3D display device. The 3D display panel includes a base plate, a plurality of pixel units, and first and second light emission units. Each of the pixel units includes at least one the sub-pixel, which includes primary and secondary pixel respectively corresponding to the first and second light emission units. Each of the two light emission units includes an anode, a hole transportation layer, an orientation layer, a light emissive layer, an electron transportation layer, and a cathode that are sequentially stacked. In the first and second light emission units, the orientation layers set the orientations of the light emissive layers to first and second orientation states, respectively, and first and second electrons and first and second holes respectively generated by the cathodes and anodes are recombined in the light emissive layers to respectively emit first and polarization light, which are orthogonal.