The present application provides a transparent OLED display panel. By providing the second power supply line and the first data line in the transparent region of the transparent OLED display panel in the first metal layer and the second metal layer, respectively and makes the two insulating layer arranged in a stacking manner, and the second data line and the third data line are respectively provided in the first metal layer and the second metal layer and makes the two insulating layer arranged in a stacking manner, compared to the interval arrangement in the conventional technology, the area of the traces of the transparent region of the transparent OLED display panel can be greatly reduced, the transmittance of the transparent OLED display panel is enhanced and to facilitate the development of the high resolution transparent OLED display panel.