A frame component for an infrared touch screen is provided, which can reduce the thickness of the infrared touch screen. The frame component has a light transmission body which is provided with a plurality of first avoid holes and/or first avoid slots along the length direction for avoiding locations of the infrared emitting tubes and infrared receiving tubes. An infrared touch screen comprising the frame component is also provided. The infrared touch screen further comprises a printed circuit board and a lower support component. A plurality of second avoid holes and/or second avoid slots is arranged on the lower support component for avoiding locations of electronic devices. A light transmission part, the printed circuit board and the support components are mutually clamped tightly to form a sandwich structure. The infrared touch screen according to the present invention has advantages of ultra-thinness and good circuit board firmness.