China's construction market development today,has entered a stage of gradually standardized.Construction enterprises have become increasingly competitive,and space is getting smaller and smaller profits.Therefore,a construction enterprise in order to fierce competition in the market gain a firm foothold in an invincible position,we must not only for the owners to provide an excellent service and quality products,but also strengthen their internal management,and strict cost control expenditures to reduce project costs,and increase economic efficiency.Control the cost of the project is a cross-cutting projects in the bidding phase of acceptance until the completion of the entire process,it is a comprehensive enterprise cost management an important part in the organization and must be given control measures attached great importance to achieve the purpose of improving the economic efficiency of enterprises .