A curved display panel includes a first substrate and a second substrate cell-assembled to each other, a spacer layer disposed between the first substrate and the second substrate and configured to support the first substrate and the second substrate so as to form a gap, and a liquid crystal layer disposed in the gap, wherein the spacer layer includes a plurality of spacer groups, each of the plurality of spacer groups includes a first spacer provided on the first substrate and a second spacer provided on the second substrate, the plurality of spacer groups have supporting area on the first substrate as same as supporting area on the second substrate. A curved display device is further provided.