Movable infrared touch system and infrared touch screen

The utility model relates to a movable infrared touch system and an infrared touch screen. The movable infrared touch system comprises an infrared touch system body. The infrared touch system body comprises an infrared transmitting device and an infrared receiving device, wherein the infrared transmitting device is provided with at least three infrared light-emitting components, and the infrared receiving device is provided with at least three photosensors. The arrangement intervals of the infrared light-emitting components are equal to those of the photosensors. The photosensors are connected with an optical signal processing module. The infrared receiving device is provided with a USB interface. The signal output end of the infrared receiving device is connected with an intelligent terminal through the USB interface. According to the movable infrared touch system, a traditional double-dimensionality or multi-dimensionality touch system is changed into the touch system capable of achieving single dimensionality, and on the premise of reducing the number of devices, the precision of infrared touch can still be guaranteed; in addition, the infrared transmitting device and the infrared receiving device are independently installed on a display screen, so that the infrared touch function is achieved, and a traditional display can be selectively modified.