| It has long been for the project cost management to control project cost by fixed rate pricing mode in China. However, with the perfection of out of the country's economic reform and market economy, the bill of quantities pricing mode is entering our china and even play an important role.Based on the analysis the emergence and development of engineering cost management mode at home and abroad, this paper expounds basic concept and principle of quota valuation patterns and bill of quantities pricing mode in engineering cost, and compares internal connection and difference of the two kinds of pricing modes, in which is analyzed the difference between the quota valuation patterns in the rules of market economy, and the disadvantages of the valuation model implementation in China in recent years, the problems in application. Moreover, taking the JinXi petrochemical company as an example and aiming at these problems, and the idea of optimizing fixed ration pricing mode is put forward, we must ensure that fairness, impartiality, rationality, dynamic of the norm, and the measurements of improving bill of quantities pricing mode is put forward, which include accelerating the quota of enterprise, compiling process, design department, construction cost consultation and rapid development of the industry, the project cost information management and improving the quality of personnel of project cost .By theoretical and empirical analysis, it is hold that the fixed ration pricing mode and bills of quantities pricing mode will co-exist during a period of time, and make full use of their advantages which can reasonably control project cost in the current projects. |