A display system and an image display method are disclosed. The display system includes a display image export device, a display image import device and a light intensity control device. The display image export device includes a display side and an opposite side; at least part of the display image export device is able to receive at least part of a surrounding image for the opposite side at the display side; and the display image export device can further display a first image at the display side. The display image import device can receive light of the first image, and to transmit the tight of the first image to the display image export device. The light intensity control device can control at least one of an intensity of light of the surrounding image and an intensity of the light of the first image.