The invention discloses a liquid crystal television system capable of being used under an outdoor environment, belonging to the technical field of radiated televisions and media and comprising a liquid crystal television panel, a liquid crystal television driving plate, an LED backlight system, an automatic brightness regulating system, an automatic temperature control system, an anti-ultravioletphotic film, a sound reinforcement system and a sealing shell, wherein the liquid crystal television driving plate is connected with the automatic brightness regulating system by an RS 232 interface for controlling the brightness of the liquid crystal television; an audio interface on the liquid crystal television driving plate is connected with the sound reinforcement system; the automatic temperature control system is used for transmitting temperature data to the liquid crystal television driving plate for controlling the work of a blower; and the anti-ultraviolet photic film is bonded to high photic glass in the front of the sealing shell and forms a closed temperature preserving space of an ultra bright television together with the sealing shell. The liquid crystal television system is widely applied to places such as walking streets, bus advertising kiosks, leisure squares, street signposts, ships, cars and the like.