The utility model relates to a motormeter dish monochrome display screen is with backlight that can mix colours, light guide support's the back is fixed with the circuit board that is shaded, the display screen passes through the mount fastening and installs the front at light guide support, the display screen is the monochrome display screen, light guide support's middle part is provided with the leaded light chamber of a plurality of mutual isolations, be provided with the astigmatism piece between leaded light chamber and the display screen, it is provided with the emitting diode of different colours to be shaded on the circuit board with the leaded light corresponding position in chamber, the emitting diode of different colours can give out light alone. The utility model discloses the circuit board that is shaded set up the emitting diode of single control's different colours with the leaded light corresponding position in chamber, emitting diode can send the light of different colours under the control of instrument treater, solely shine the display screen through the leaded light chamber to what make the display screen can show different colours with the leaded light corresponding region in chamber, thereby realizes mixed colours demonstrations of monochromatic screen, thereby satisfies the demonstration needs of the different colours that motormeter coiled.