A display device and a configuration of common electrode thereof are provided. The display device and the configuration of common electrode thereof are used for dividing the common electrode connected to an electrostatic discharge protection circuit into two conducting wires and electrically connecting two conducting wires between two corresponding adjacent signal lines to form a net structure. Thus, the aforementioned configuration is able to repair the short circuits occurring between several common electrodes and several signal lines, thereby increasing the yield rate of the display device.