3D image display system and display method

A display method includes following steps: generating a first depth map and an edge map according to a color image; determining a first depth value of a first pixel and a second depth value of a second pixel of an edge region of the first depth map according to the edge map, in which the first pixel and the second pixel are aligned in a horizontal direction; adjusting N depth values of N pixels adjacent to the edge region according to a zero parallax setting reference level, so as to generate a second depth map, in which N is a positive integer, and the N pixels includes at least one of the first pixel and the second pixel; and generating multiple-view images according to the second depth map and the color image, so as to display a 3D image.