A high-efficiency slim cigarette storage method for re-drying finished cigarette packets relates to a slim cigarette storage method in the tobacco industry, in particular to the high-efficiency slim cigarette storage process for the finished cigarette packets in threshing and re-drying production in the tobacco industry. The method includes the steps: a, pre-pressing and packaging; b, automatically warehousing in; c, storing slim cigarettes; and d, automatically warehousing out. The method has the main advantages that 1, the cigarette packets are stacked in the form of one-four packets / unit to be stored and conveyed, so that conveying flow can be effectively reduced; 2, building of high-rise storage rack warehouses is facilitated, space resources can be used to the maximum extent by means of stacker technology, investment is saved, automation degree level is high, and management is facilitated; 3, the slim cigarette efficiency is improved beneficially, and the quality of tobacco leaves can be better guaranteed; 4, investment cost is effectively reduced by the aid of pallet-free storage; 5, information tracking in the whole course is facilitated, and information traceability is improved; and 6, an advanced logistic system is formed beneficially, and the automated management level of enterprises is improved.