The invention discloses a bottle unloading method and device. The method is characterized in that a bottle stack composed of a plurality of layers of stacked bottle piles is placed on a conveying device at a lower position, then is horizontally conveyed to a lift by the conveying device and is lifted to a higher position by the lift, the bottle pile on the topmost layer enters a frame opened or closed by power, the frame opened or closed by the power is contracted under the effect of the power and hoops the bottle pile tightly, then a transverse moving mechanism drives the frame for pushing the bottle pile on the topmost layer to enter a conveying device at a higher position, the power opens the frame, vertical driving power lifts the frame for leaving the bottle piles so that the bottle piles can be conveyed by the conveying device, then the frame is reset, a grabbing device on the frame takes away a bottle pile base plate or a floor panel, and therefore the bottle pile of the next layer can be conveyed to the higher conveying device from the lower position. Compared with the prior art, the bottle unloading method and device have the advantages that conveying is accurate, bottles are protected against damage, the conveying efficiency is high, the manpower is saved, and exhaust emission can be effectively reduced.