The engineering design model based on IFC standard contains vast amount of data and complex non-graphic information, which often results in lower efficiency for designers to inquire and manage the data information. Through the analysis of the data integration mechanisms of IFC model and the mapping rules of EXPRESS data types, as well as the exchange technologies of IFC neutral files, the principles of standard data access interface and the data features of engineering design model, a database application system of engineering model, which based on the CFG Graphic platform of PKPM software, was designed and developed. A gymnasium project, which locates at Beijing, was used as the case study. The IFC format model of the gymnasium was read, and the main functions of the application system such as read, query, create, and two-dimensional display were applied respectively. The results show that the system can help designers to improve the daily maintenance and management operation of the IFC format data of engineering design model.