The paper aims to solve the difficulty of simultaneous detection of packaging paper and transparent paper in cigarette factory and design a symmetrical multi-spectral analysis system for the appearance detection of cigarette packages to be used in FX-2 packaging machine. Adjustable bracket, stable LED and high-speed multi-spectral CCD light source were selected for the system to capture the cigarette pack surface to be measured in the chute. The multi-spectral image obtained was transmitted to high-performance industrial computer, and the sub-band images were processed jointly. The system could detect packaging paper and transparent paper simultaneously. Conclusion: The system has reasonable structure, easy installation and maintenance, high detection accuracy and adjustable parameters. It is a stable and reliable system.