A display panel and a display device are provided by embodiments of the present disclosure, relating to a field of display technology. The display panel comprises a pixel array substrate and an opposite substrate which is located opposite to the pixel array substrate, the pixel array substrate comprising a pixel array and a substrate on which the pixel array is arranged; the pixel array comprises a plurality of columns of sub-pixels, a light-shielding wall being provided between any two adjacent columns of sub-pixels; and a first length of the light-shielding wall in a direction perpendicular to the substrate is smaller than a spacing between the pixel array substrate and the opposite substrate. By providing the light-shielding wall which is enabled to shield sub-pixels(s) so as to decrease a visual range of the display panel, between any two adjacent columns of sub-pixels within the pixel array, a peep-proof aim can be achieved by the embodiments of the present disclosure. And the first length of the light-shielding wall in a direction perpendicular to the substrate is smaller than a spacing between the pixel array substrate and the opposite substrate, such that neither the thickness of the display panel nor that of the display apparatus can be increased by providing the light-shielding wall.