The present invention provides a 3D display system, which includes an OLED display panel and 3D shutter glasses. The OLED display panel includes a plurality of data lines for transmitting data signals, a plurality of scan lines for transmitting scan signals and a plurality of pixel units. When the pixel unit displays the left-eye image data signal and the right-eye image data signal, the left-eye shutter and the right-eye shutter of the 3D shutter glasses are both closed. When the pixel unit displays the left-eye blank data signal, the left-eye shutter of the 3D shutter glasses is open. When the pixel unit displays the right-eye blank data signal, the right-eye shutter of the 3D shutter glasses is open.