The invention discloses a curved display panel and a display device. In directions extending to a first side and a second side at a zero-visual-angle center of a curved display panel and having an observation angle increasing gradually, the object material volume concentration of an organic light-emitting layer is increased gradually, the energy gap of the object material of the organic light-emitting layer is reduced gradually, or a function layer with the thickness increasing gradually is arranged between a first electrode and a second electrode, so that the wavelength of the light-emittingspectral peak value of an organic light-emitting diode is increased gradually and thus a blue shift phenomenon of the light-emitting spectral peak position is suppressed. Therefore, color differencesof different display regions of the curved display panel under the visual angle of the watcher are improved and thus the display effect of the curved display panel is improved.