The construction project is a collaborative multi-party organization activity, and each phase of the project life cycle has mutual transmission of information flow. At present, due to the subjective and objective factors in the life cycle of the architecture, there is often distorted information transmission, namely "the information isolated island" phenomenon. This phenomenon has greatly restricted the effective progress of the project, while the appearance of BIM technology provides an effective tool for solving the problem. Based on demand analysis, in the construction project collaborative mechanism, this paper establishes the construction project based on BIM technology as the core of the coordination model, analyzes the problem of construction project collaborative model in the actual work and puts forward some solutions, and provides the basis for building life-cycle process reengineering and improve the efficiency of the project.