A display panel, a folding method thereof, and a display device are provided. The display panel includes a display region, a non-display region, and a bending region. Side edges of the bending region include bending points, the bending points are disposed in the bending region, and the side edges are concaved toward an interior of the bending region at the bending points. During folding, the bending points on the side edges of two sides form at least one guiding axis, which makes the display panel easier to bend, and folding precision and folding effect are good.