The problems existed in the current green building design software are analyzed combining with the architectural design process and Green Building Evaluation Standards.The method of constructing system frame for GB design software are analyzed.Through analyzing we think that BIM technology is an affective method to keep data unique, data consistent and to share resources in GB design software.According to the GB Evaluation Standard the functions of building information model and parameters in different stage of a building life cycle are discussed.Through the analysis of BIM in HVAC system used in energy simulation software, the concept of extended BIM are put forward. We should pay more attention to the resaerch on BIM in M&E system.