For the reason that online experiment teaching is an urgent problem to solve in the network course.The fundamental function of the virtual laboratory is to create a web-based three-dimensional environment so that students can experience the real network experiment environment, feel the experiment and simulation can operate. So student can do the experimental study with no time and place restrictions.
At first, this paper pointed out that the first meaning of the background to the study. described the virtual reality technology and basic characteristics of the key issues on the virtual reality technology. Then the study proceed from the virtual reality technology development and characteristics, and analyzed the VRML meaning and characteristics, and deeply understood the subject of the theoretical basis and technical basis of this project. Then analyzed the meaning and characteristics of virtual laboratory, obtained the main features ,functions and major lack of technology in the virtual laboratory. Furthermore, made a simple example of virtual laboratory based on these theoretical analysis, achieve a part of functions. Finally, this subject made a summary and outlook.
