Abstract: To eliminate defective cigarettes caused by tipping paper faults,a tipping paper detection device was designed based on machine vision.The device was mainly composed of image acquisition,image processing,light source,alarming and rejection units.A camera and an illuminating system were installed under the automatic tipping paper splicer for tipping paper detection,the detection results were sent to the control system,and defective tipping paper was rejected.By adopting purpose-made defective tipping paper,the detection rates of the machine vision device were tested and compared with visual inspection.The results showed that the detection rates of the machine vision based device for tipping paper with visible streaks reached 100%,for stamping defects reached 96%,for the unqualified were significantly higher than those of visual inspection.The appearance quality of cigarettes was effectively promoted.