Aiming at the structure teaching problem of rocket artillery such as difficult to understand, hard to observe the internal structure, put forward the rocket launcher virtual walkthrough scene based on VRML. The 3DSMAX, UG and VRML are combined to modeling. Using view point controlling technology, VRML and JavaScript language, the function of automatic walkthrough, interactive operating walkthrough, suspended navigation menu and other complicated interactive functions are realized. A vivid virtual walkthrough learning environment is constructed.