The invention provides an array substrate, a touch screen, a drive method and a display device. The array substrate comprises a substrate body, wherein a gird line, a data line, a first common electrode and a second common electrode are formed on the substrate body; the second common electrode comprises transverse electrode groups positioned in the same row and metal jumper wires for connecting every two adjacent transverse electrode groups on the same row; the first common electrode comprises a longitudinal electrode group; a switching circuit which is switched on at a touch screening stage so as to ensure that the first common electrode and the data line are connected in parallel is arranged between the first common electrode and the data line. In the touch scanning stage, the switching circuit is switched on, so that the first common electrode is connected with the data line in parallel, and thus equivalent resistance of the first common electrode is reduced, the signal to noise rate of the first common electrode is indirectly increased, further, a voltage signal coupled from a touch induction electrode is monitored more accurately, and a touch point can be positioned accurately.