Abstract: For tracing cigarette packets produced by GDH1000 packer, a set of shift code printing device for cigarette packets was designed via analyzing the process of packet blank folding on wheel No. 3. The device was mainly composed of shift code roller, counter roller, outer rotation folder. By the power source of outer rotation folder, the printing device and the mandrel of folding wheel moved synchronously. The gear system and gear box were redesigned to facilitate the printing device retrofitting. The results showed that the device printed clear shift code and featured quick code changing. The time needed for shift code changing reduced from 7.1 to 0.8 min. The additional shift information satisfies the requirements of enterprise standards, and the management and control level of cigarette packing quality is promoted effectively.