Abstract: This paper conducts a field Investigation on the development needs of cost consulting enterprises, and summarizes the pain points and problems existing in the traditional cost industry. According to the actual needs of enterprises, a development mode called "cost BIM" is proposed, in which cost BIM models are generated based on design BIM models and all BIM models can be used throughout the entire project processes, the difficulties and problems in the implementation and application of the "cost BIM" mode are analyzed in depth, and the feasibility and value of the "cost BIM" mode in promoting consulting enterprises to realize BIM model applications in entire project processes are demonstrated through practical cases.