Abstract: A new simulation method for moving target processing algorithm based on Open Source Computer Vision library in Internet is proposed. The characteristics of OpenCV library and the configuration in the context of VC6 are presented. The optical flow field of moving target was obtained by calling video read-write functions in OpenCV, calculation of image features and optical flow functions, and the foundation for the analysis and tracking of the moving target status was provided. It proves that the proposed simulation method is effective and feasible.