Display substrate and display device

A display substrate and a display device relate to the technical field of display. The display substrate comprises a substrate body, a display area and a non-display area, the display area and the non-display area are arranged on one side of the substrate body, the display area comprises a plurality of micro-cavity cushion layers which are arranged in a stacked mode, the micro-cavity cushion layers comprise the first micro-cavity cushion layer and the second micro-cavity cushion layer, and the non-display area at least comprises the first micro-cavity cushion layer and does not comprise the second micro-cavity cushion layer; wherein the display area comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the first sub-pixel, the second sub-pixel and the third sub-pixel are used for emitting light of different colors, the total thickness of a micro-cavity cushion layer in the first sub-pixel is d1, the total thickness of a micro-cavity cushion layer in the second sub-pixel is d2, the total thickness of a micro-cavity cushion layer in the third sub-pixel is d3, and the total thickness of a micro-cavity cushion layer in the third sub-pixel is d3. The total thickness of the microcavity cushion layer in the non-display area is h, the thickness of the second microcavity cushion layer is h2, and the variance value of the array (d1, d2, d3, h) is smaller than the variance value of the array (d1, d2, d3, h + h2).