The invention provides a flicker adjustment device used for adjusting the flicker degree of a display panel, the flicker adjustment device includes a common electrode driving module and a control module, and the common electrode driving module includes a common voltage generation unit used for generating common voltage; the control module is used for generating a first control instruction when the display panel displays a first predetermined picture, and generating a second control instruction when the display panel displays a second predetermined picture; the common electrode driving module also includes an adjustment unit, and the adjustment unit is connected with the control module and is used for adjusting common voltage generated by the common voltage generation unit when receiving the first control instruction, and maintaining common voltage generated by the common voltage generation unit to be a current value when receiving the second control instruction. The invention also provides a flicker adjustment method and display equipment. The flicker adjustment device and flicker adjustment method, and display equipment provided by the invention can enable flicker adjustment of the display panel to be relatively convenient.