The invention provides a gray-scale voltage correction method of a display device. The method comprises the following steps: independently obtaining gray-scale voltage correction parameters of each sub-display area of the display device; for any sub-display area, wherein the step of obtaining the gray-scale voltage correction parameters comprises the following sub-steps: in response to acquired display information of the sub-display area, adjusting a gray-scale voltage signal provided for the sub-display area so as to enable the acquired display information of the sub-display area to meet a preset display standard; and obtaining a gray-scale voltage correction parameter corresponding to the sub-display area according to a gray-scale voltage signal provided for the sub-display area when thedisplay information meets a preset requirement. The source driving circuit corresponding to each sub-display area can drive the sub-display area according to the independent gray-scale voltage correction parameter of the sub-display area, so that the brightness of the whole display surface of the display device is more uniform. The invention further provides a driving method of the display device, a correction system and a storage medium.