A display module includes: cover glass, a first region of an inner surface of the display module covering a photosensitive surface of an image acquisition module and the inner surface opposite to an outer surface of the display module; a display component configured to display in a display region; a polarization component, located between the display component and the cover glass and for filtering ambient light reflected from the display component based on a polarization action in the display region outside a second region covering the first region; and an electrochromic component, located between the cover glass and the display component, adjacent to the polarization component and filling the second region.