Provided are a display panel, a preparation method thereof and a display device. The display panel includes a substrate; a driving circuit layer, where the driving circuit layer is disposed on a side of the substrate, and includes a plurality of driving circuits; and an LED element layer, where the LED element layer is disposed on a side of the driving circuit layer facing away from the substrate, and includes a plurality of micro-LED elements, where each of the plurality of micro-LED elements is electrically connected to a respective one of the plurality of driving circuits through a via hole.