This paper presents a framework for a highly immersive multi-projection virtual environment system, and addresses the key problems for building the system such as stereo display., graphics partition, render synchronization, geometric calibration, color calibration, etc. . Using networked PCs, low cost projectors and low capability network equipment, a five-channel 220 degree view field multi-projection virtual environment application system is built. Its coherent and highly immersive display effect validates the method.