A flexible display panel is provided and defined with a special-shaped cutout area and a display area, including a substrate, and a plurality of pixel structures, a scan line layer, and a data line layer disposed above the substrate, wherein each of the plurality of the pixel structures includes three sub-pixels, and the scan line layer includes a plurality of scan lines, and the data line layer includes a plurality of data lines. The sub-pixels are arranged as an array over the substrate, and the scan lines and the data lines are disposed in the array of the sub-pixels. A scan line is disposed between every two rows of the sub-pixels and two data lines are disposed between every column of the sub-pixels in the special-shaped cutout area. Therefore, the frame of the special-shaped cutout area can be reduced to realize the narrow frame of the special-shaped cutout area.