The invention provides a method for displaying a high-grayscale depth image, and relates to a pseudo-color coding display method for a high-grayscale depth image. According to the invention, the high-grayscale depth image is mapped to RG two channels or RGB three channels through certain computing and processing, details of the high-grayscale depth image are visually displayed at a receiving and displaying terminal of receiving equipment, and the depth precision is highlighted. The content provided by the invention is conducive to display and processing of the high-grayscale depth image.