The work aims to propose a correction detection method, in order to improve the correction control accuracy and versatility of the packaging machine. The CCD imaging of two linear arrays was used and the CCD signals of the two were compared to judge whether the deviation occurred when the materials were working. Then, the controller was used for correction operations. The pixel positions of the two CCD gray values with significant changes indicated the edge position of the strip. The difference between the two pixels could be used to judge whether the strip deviated and whether the scheme was feasible. Compared with the previous CCD detection method, the stability and accuracy of the proposed method are improved, and when the width of the material changes within a certain range, the correcting device can still work without other operations, and its versatility is also improved to some extent.