A flexible display panel and a flexible display device are provided. The flexible display panel includes a flexible display screen and a support provided on a backside of the flexible display screen. The flexible display screen includes a first bending region and a second bending region disposed on two opposite sides of the first bending region, and the second bending region is positioned at an edge of the flexible display. The support includes a first folding portion corresponding to the first bending region and a hollowed-out structure corresponding to the second bending region.