The work aims to solve the problem that the appearance quality defects of cigarette packet are easily caused in the process of cigarette packet conveying, storage and packaging from the GDX6S packaging machine outlet to the cigarette packet conveying channel, the cigarette packet storage device and the C800 packaging machine inlet, and no detection device can effectively detect and eliminate such defects. A new type of appearance visual detection device for cigarette packets was designed. Through the study on its key technologies, the installation of integrated industrial cameras and trigger pulse signals, the design and installation of an omni-directional rotatable bracket, the collection and processing of dynamic images, and the design of PLC control programs, the dynamic detection and accurate elimination of appearance defect product of the cigarette packet were realized. After the proposed appearance visual detection device was installed, the detection elimination rate of the appearance defect product of the cigarette packet was ≥99.9%, and the false detection rate was ≤0.9%. The proposed cigarette packet appearance detector can improve the product quality, reduce the material consumption, improve the equipment operation rate and reduce the risk of the defective cigarette packet entering the next process. It can be applied to all packaging units in the industry.