The evolution of the computer technology and the rapid development of the visualization technology are increasing the demand of using the 3D technology on the network. In this study, we employ a network-based virtual reality technology called Extensible 3D (X3D) to implement the system. We construct a 3D scene authoring tool with the capability of human-interaction by the combination of X3D and JAVA programming language. In the system, the user can get attributes of objects and modify them in the 3D scene directly. For this reason can establish the 3D scene authoring environment that is simpler and easier to use.