The invention relates to an outdoor large screen display device which includes an automatic static picture switching display system used in high environment illumination intensity condition and a dynamic image display system used in low environment illumination intensity condition. Said automatic static picture switching display system comprises a winding type painting picture switching device, said dynamic image display system comprises a dynamic image display screen. In accordance with characteristics of day display and night display, the outdoor large screed display device uses low-cost painting picture in day high environment illumination intensity condition, and takes full use of low environment illumination intensity condition in night, two display states can be automatic identifiedswitched, and forms perfect automatic advertisement display system.