Heavy truck plays a considerable role in modern transportation and the truck's stability of manipulation has an important influence on traffic safety. Using the ADAMS software, a virtual model of Dong Feng truck has been built based on the multi-body dynamics and the parameters of real truck. The simulation of truck's stability of manipulation under double-shift line with different speeds was conducted. The result shows that the virtual model marches well with the truck prototype, which is a good model for further simulation.