Abstract: The process of virtual assembly is achieved on computer and three dimensions
visible virtual scene is established by VRML. A method of constructing virtual reality based on
the VRML and Java is offerproposed. It can strengthen the interaction between VRML virtual
scene and outside, meanwhile, a specific technique on how to implement the virtual assembly with
cartoon demo on the network is brought forward with an example. This method can not only be
used to show the visible assembly in network environment, but also be applied to the scientific
visualization based on VRML in other fields.

Key words: virtual scene, visible assembly, interaction, VRML