Common electrode control method, common electrode control circuit and display device

The invention relates to a common electrode control method, a common electrode control circuit and a display device, belonging to the field of display. The input end of the common electrode control circuit is connected with n pixel electrodes in a display panel, the output end of the common electrode control circuit is connected with a common electrode in the display panel, and n is an integer of greater than or equal to 1; the common electrode control circuit is used for acquiring pixel voltage loaded onto the n pixel electrodes and outputting preset voltage P to the common electrode according to the acquired pixel voltage, so that the preset voltage P meets a target formula, the target formula is as shown in the specification, wherein T is any pixel voltage in the acquired pixel voltage, M is preset voltage difference, Y is a preset threshold value, and || refers to solution of an absolute value. According to the invention, the problem that a display screen is poor in display effect is solved, the display e