The principle of deformation screen was described. The method of using dynamic deformation screen was il1ustrated. A kind of deformation screen backstop used for vehicles and other moving targets was designed which combined with camouf1age nets to constitute a deformation screen. A screen span experiment was made on some vehicles , the edge detecting method evaluating the image has been adopted after span by MAT LAB, the target' s contour features were found to be eHectively changed. Though comparing three kinds of images in the cases of not using a screen , using a simple screen and using the distortion screen , it was found that the target can integrate with background after applying deformation screen.