The authors propose a scheme for the seal imprint verification with the line parameter in difference matching image. The method can be used to match two images accurately. Then with Hough Transform, the authors calculate the number of beeline in difference matching image, at last they make the technique in the recognition experiments of 60 pieces final decision by the parameter. The performance of image, which gained from 6 kinds of objects, is also involved. The experiment result is satisfactory, which the correct-ratio of object recognition is above 85%.