A touch screen comprises a fixed electrode disposed on a side of an array substrate away from a color filter substrate, the array substrate comprises a base substrate, a plurality of sensing lines and a plurality of common electrodes arranged in a matrix, orthographic projections of the sensing lines and the fixed electrode on the base substrate overlap with orthographic projections of the common electrodes on the base substrate, an extending direction of the sensing line is parallel to a column direction of arrangement of the common electrodes; a portion of the common electrodes function as first driving electrodes during a pressure sensing touch control, the sensing lines corresponding to the rest common electrodes function as sensing electrodes during the pressure sensing touch control; the fixed electrode assists the first driving electrodes and the sensing electrodes to detect a touch pressure during the pressure sensing touch control.