VRML(Virtual Reality Modeling Language) as an international standard for Virtual Reality, has already been widely adopted for graphical representation of 3D objects over the Web. Adopting VRML model in RP(Rapid Prototyping) can reduce the precision loss caused by triangulation in generating STL file. Hence exploring a slicing method and software for VRML model is significant to improve the accuracy of RP products, and has good expansibility and adaptability for color RP and virtual manufacturing. Slicing strategy and method for VRML model were proposed based on the analysis of VRML structure. With component-based development concept, slicing software for VRML model was developed using VC++ and OpenGL. The slicing software system has high precision and good expansibility.