Abstract: A method of imitation insect compound eye of vehicle breaking detection method on video of traffic is proposed, for automatic detection of traffic on general highway and express way. The foreground image is tracted with the technology of a new variational background and is divided into many small blocks with grid. The count of foreground points of every grid is got with checking every grid. And vehicle breaking automatic detection is done with mathematical modaling of vehicle breaking. Finally, several traffic videos of different environments are tested, and the results indicate the proposed method is efficient, high-detection-rate and robust.