The invention relates to an energy-saving light-emitting advertising device and a mounting method thereof. The energy-saving light-emitting advertising device comprises an advertising frame, a liftingmechanism, an anti-falling cylinder and a
solar lamp module, and the advertising frame comprises an embedded column body, a vertical column body, a longitudinal column body, a box body base, a
diagonal draw bar, a covering ring and the like; the lifting mechanism comprises a driving motor, a first rotating shaft, a second rotating shaft, a transmission gear set, a first take-up wheel, a second take-up wheel, a third take-up wheel, a first guide wheel, a second guide wheel, a third guide wheel, an advertisement pasting plate and the like. The anti-falling cylinder is arranged on the advertising frame; and the
solar lamp module is arranged on the advertising frame. The energy-saving light-emitting advertising device is very high in overall structural strength, workers do not need to
climb when advertisements need to be replaced, safety accidents can be avoided, the advertising cloth is very convenient to replace, the advertising cloth can be prevented from being wetted, the service lifeof the advertising cloth can be prolonged, and a good advertising display effect can be kept for a long time; and the mounting method is very simple and convenient, and the effect of rapid installation can be achieved.