Abstract:In the engineering projects, the preparation of the bill of quantities is the basic work of engineering cost management. The preparation work also requires a significant investment of human resources, but it is still difficult to avoid the problems of mistake and leaks, and is also hard to carry out the effective classification statistics and accurate control, which is essentially a bunch of forms. Based on the preparation mode of bill of quantities of engineering digitalization, through the establishment of BIM model, a coding rule base applicable to bill preparation and enterprise metering method is built. An effective database platform is established to improve the preparation efficiency while make the bill more accurate and data traceable, which can be extended to multi-dimensional applications of cost analysis, three-calculation comparison, and accurate control of raw materials. The solution proposed has received the good results in practical applications, has the strong reference significance and has the promotion and application value.