A touch screen and a pressure touch detection method thereof are disclosed and belong to a technical field of display. The touch screen includes a touch module including a plurality of sense electrodes and a plurality of touch electrodes, wherein the sense electrodes and the touch electrodes are respectively arranged in different layers. The touch screen has a display region and a non-display region, and at least one pressure sensor is arranged in the non-display region and includes a first electrode and a second electrode, the first electrode and the sense electrodes are arranged on a same layer, the second electrode and the touch electrodes are arranged on a same layer, and the pressure sensor detects a touch pressure according to a distance variation between the first electrode and the second electrode. The touch screen is applicable to a small-sized touch display apparatus.