The present disclosure provides a gamma correcting method and device, a display device, and a computer storage medium, which belong to the field of display technologies. The method includes: acquiring measurement data of a first display panel, wherein the measurement data includes m display brightness levels to be compensated and m sets of compensation parameters corresponding to the m display brightness levels, where m is a positive integer; and compensating a second display panel at a corresponding display brightness level with the m sets of compensation parameters respectively, wherein the second display panel and the first display panel have same structure and material.