The present application provides a flexible display screen and a display device. The flexible display screen includes a display panel, at least one reel, at least one reel restoring mechanism, and a flexible layer. The reel is disposed at a side of the display panel, the reel restoring mechanism is disposed at a side of the display panel, and the reel is correspondingly set on the reel restoring mechanism. The flexible layer includes a middle portion and a side portion connected to the middle portion, the middle portion of the flexible layer covers a surface of the display panel far away from the display surface, and the side portion of the flexible layer is wound on the reel.