The present disclosure provides a flexible substrate, the flexible substrate is divided into a display region, a binding region on a side of the display region, a to-be-bent region between the display region and the binding region, two transition regions between the to-be-bent region and the display region and between the to-be-bent region and the binding region respectively; the transition regions comprise a plurality of transition sub-regions arranged in a first direction, the first direction is a direction from the display region to the binding region; the flexible substrate comprises a flexible base and a back film disposed on the flexible base, a portion of the back film is located in the transition regions; in any one of the transition regions, the amount of distribution per unit area of the back film in each of the transition sub-regions gradually decreases in a direction gradually approaching the to-be-bent region.