Anti-cracking touch screen for POS machine

The utility model relates to an anti-cracking touch screen for a POS machine. The touch screen comprises a touch cover plate and a casing, one side of the touch cover plate is connected with a signalflat cable; the signal flat cable is connected between the touch cover plate and the POS machine mainboard. The signal flat cable is provided with a plurality of printing transmission lines. Each printing transmission line comprises an ITO connecting line and a mainboard connecting line. A fracture is formed between the ITO connecting line and the mainboard connecting line; a supporting block is arranged in the machine shell. A conduction body is arranged on the top surface of the supporting block; the conduction body is corresponding to the plurality of fractures of the plurality of printingtransmission lines at the same time. When a thief intends to prize up the touch screen to swipe the POS machine in a stealing manner, the POS machine is opened. When the touch cover plate is pried up,the fracture cuts off the