Abstract With the rapid development of network technology, the traditional teaching methods can not adapt to the teaching objectives of colleges. VR has become a basic teaching tool in Colleges, which can help teachers complete teaching. At the same time, VR can improve students’ interest in learning, which can help students explore more subject knowledge. Mechanical specialty is an important subject, which requires simulation and other learning. At present, there are many kinds of software in the world, which can carry out mechanical simulation, such as SolidWorks, 3DMAX, flash and so on. Through the relevant software, colleges can design the mechanical simulation system, which can help to set up the whole process resource library in a certain field. Through the resource library, colleges can help to complete the three-dimensional entity display of equipment, which can be displayed in an all-round way. Through VR, we can help students understand the real work scene, which can help improve the students’ mechanical design ability. At the same time, through computer VR, colleges can help students learn more about the working scene of mechanical design. Firstly, this paper analyzes the importance of mechanical simulation system design. Then, this paper designs the related system content. Finally, some suggestions are put forward.