A display power saving method for an electronic system includes a display including a light emitting diode panel. The display power saving method comprises detecting whether a pointing device exists in the electronic system, obtaining the location of a pointer controlled by the pointing device when detecting the pointing device existing in the electronic system, determining a display area of a screen of the display according to the location of the pointer, recognizing whether a power management mode of the electronic system is a power saving mode and decreasing the brightness of an area of the screen other than the display area when recognizing that the power management mode is the power saving mode.