In recent years, BIM (Building Information Modeling) technology plays more and more significant role in architectural design companies at home and abroad. In China, many well-known design institutes have been established BIM Research team. Based on many years'experiments of BIM consulting and the analysis of difficulty in BIM application, the author points out that BIM application and promotion is not to learn software simply but a long gradual process. In order to help design institutes grasp the methods of combining design tools and project characteristics, this process requires careful planning and supports from BIM consulting team.