The invention discloses a display panel and driving method thereof, and a display device. The display panel comprises multiple row scan lines, multiple column data lines and pixel areas defined by thecrossed row scan lines and column data lines; each pixel area is provided with a switch element and a common electrode. The display panel also comprises a sequential control sub-circuit used for controlling output signals of the scanning lines when the display panel displays an image to be detected, thus enabling a first common voltage and a second common voltage to be equal, wherein the first common voltage is the voltage value of the common voltage positioned in a first display area when the scanning line of the first display area outputs a signal used for turning off a switch element, andthe second common voltage is the voltage value of the common voltage positioned in a second display area when the scanning line of the second display area outputs the signal used for turning off the switch element. According to the display panel and control method thereof, and the display device provided by the invention, the brightness of the first display area and the second display area can beprevented from being non-uniform, and the display effect of the display panel can be enhanced.