Multi-channel visual reality system based on PC cluster can give users strong sense of immersion. This paper discusses the synchronous problem in multi-channel visual reality system. For the viewpoint synchronization, this paper brings forward a message communication mechanism based on change of user operating status. This mechanism can reduce the message amount by a large margin, so the message block is avoided. This paper also studies the synchronization of animation. Path animation based on Cardinal interpolation and supporting synchronization is researched. Serial frames animation supported with synchronization is also studied. Its data structure is discussed, and the methods of modeling and constructing program object are brought forward. At last, an example project is shown. It demonstrates the good performance of the theory and method in this paper.