The invention discloses a flexible packaging box system and technology. The flexible packaging box system comprises a cigarette chain board conveyor, a stacking machine, a tobacco stacking turnover box, a tobacco stack turnover box conveying line, a reciprocating elevator, an automatic paper box loading device, a packing box machine and a control system used for controlling the work of all equipment, the stacking machine is connected with the bag rolling unit through a strip tobacco chain plate conveyor, the stacking machine is connected with the tobacco stacking turnover box conveying line, the outlet end of the conveying line of the tobacco stacking turnover box is connected with the reciprocating lifting machine, and the reciprocating lifting machine is connected with the packaging box machine. According to the system, an original packing box mode taking strip as a unit is changed into a packing box mode with a cigarette stack as a unit, the production capacity is greatly improved, a single carton packaging unit cigarette finished product is realized, the quality of the cigarettes is traced to the packaging unit, the one packaging box unit can be used for producing a plurality of finished cigarette finished products and the purpose of flexible collinear production of the finished cigarette finished products.