Electrochromism display device, display equipment and discoloring method

The invention discloses an electrochromism display device, display equipment and a discoloring method, and belongs to the field of display. The electrochromism display device comprises a first pixel unit, a first switch unit, a second pixel unit and a second switch unit which are parallelly arranged from top to bottom in sequence; the first switch unit is used for providing voltages with different sizes for the first pixel unit to make the first pixel unit transform between the transparency and the black; the second switch unit is used for providing voltages with different sizes for the second pixel unit to make the second pixel unit transform between the transparency and a first color, and the first color is any color except for the black. By means of the electrochromism display device, the display equipment and the discoloring method, the electrochromism display device can be made to display the black.