In the distance learning of the courses of Machine Parts and Design, the hypothesized experiment through internet is a kind of the significance teaching method. At present, multimedia, network technologies are extremely mature. Using the internet technology to realize the course learning can help the students to master the principle of chain drive easily. The key problem to realize the hypothesized experiment on the net is how to carry on the simulation of machine parts or components using the computer software. The realization method of the hypothesized simulation of chain drive is introduced in this paper based on MSC. Visual Nastran 4D software.