The embodiments of the present invention provide a flexible display panel and a display device comprising the flexible display panel. The flexible display panel comprises a plurality of effective display regions, each effective display region comprising a pixel array; and at least one power supply lead region, which comprises at least one power supply lead in electrical connection with a power supply line of the flexible display panel; and the effective display regions and the power supply lead region are arranged alternately. For display devices using the flexible display panel according to the embodiments of the present invention, especially those having a larger size or higher resolution, the luminance uniformity can be improved and enhanced, and the advantages of the flexible display device can be further strengthened.