A foldable screen comprises a plurality of display regions spaced apart in a first direction and one or more foldable regions located between two adjacent ones of the display regions, the foldable screen further comprising a supporting layer and a heat dissipation layer arranged in a stack, where the supporting layer is bendable and is arranged in the display regions and the foldable regions; and the heat dissipation layer is bendable and is arranged in the display regions and the folding regions, and portions of the heat dissipation layer corresponding to the foldable regions are provided with through hole arrays. A display device comprising the foldable screen is further disclosed.