The present invention is a network conference system and method based on three-dimensional technology, which belongs to the field of virtual reality technology, the field of three-dimensional technology, and also belongs to the field of electronic commerce. This system conducts meetings in a virtual space, which solves the problem that the video network meeting lacks the sense of meeting scene and interaction, and easily leaks the image privacy of the participants. At the same time, it does not rely on video data, and avoids the problem that the meeting effect is easily affected by the network. The feature of the system is that the participants control the virtual characters to enter the 3D virtual meeting room to participate in the meeting through the Web browser, and complete the real meeting through the control of the 3D characters and items and UI (User Interface) operations, including construction, switching dynamic The meeting room environment, the nature of construction meetings, dynamic sharing of files, synchronous operation of 3D objects with complex structures, etc. The system is easy to use and highly secure, providing an instant and three-dimensional conference platform for participants distributed all over the world.