This system combining the tone and stroke structures to generate nonphotorealistic image with pencil drawing effect. First , process the image with a high lift filter, which making the stroke image contained more information .Then by calculating the gradient of the gray scale, and according to the gradient do some classification. In the outline extraction stage we set two parameters, respectively, the length and depth of the pencil, by adjusting the parameters will produce different effects in the contour diagram. Texture is to build a parametric model approach to stratify the image, select the people drawn pencil texture rendering tone for each layer, but different shades weights will produce different styles of shades textures. The resulting sketch pencil drawing is convolution superimposed contour and texture, and the system can be further extended to colored pencil drawing automatically.