【正文】 the 。 from parison choose the best design. Construction phase of the project implementation unit construction cost management to control the cost of the project is reasonable in the project to meet quality standards premise, in the investment decisionmaking stage, the design phase and construction phase of the project put the project approval occurred in the control limits, strive in various construction projects rational use of human, material and financial resources to achieve good investment returns and social benefits. The project cost control and management is a dynamic process. The dynamic market economy, to make the investment in the identification and control bee more plex, this will require the construction units to the management of project cost to the project runs through the entire process, it is necessary to have a prehensive focus. The implementation phase of the projects. The implementation phase of the project cost management is the implementation of the entire process of project management. Project implementation phase of the project cost management can be divided into three parts: the tender management, construction management and settlement management. Bidding for the construction phase of the construction units Bidding system control engineering cost effective means, bid anization can improve the costeffectiveness of construction projects and ensure the quality of construction projects, shortening the construction cycle return on the investment, construction units can take full advantage of bidding for the effective means of cost control. Construction No. 10 on the 7th ministerial decree issued a contract with the Construction Contract Pricing Management. clearly pointed out in bidding for projects using inventories. This requires the building of units conducting the tender exercise, in the tender document to include not only the usual content, like tender notes before schedule, tender notes, the conditions of the contract, the contract terms of the agreement, contract format, technical specifications, drawings, tender documents and other reference format, it is also necessary to provide the engineering inventory, Bidding as a reference document of the important ponents. Construction units in the tender document for the project inventory, in accordance with state or local rules promulgated by the calculation that the reunification of the divided projects, unified measurement units and the reunification of the engineering calculation rules, according to design drawings to be calculated and statistical arranged, obtain the list. Quantities to be followed in the preparation of an objective, impartial, scientific, and rational principle. Compilers must have strong manly budget, and should have certain knowledge of the engineering design and construction experience, and the material and mechanical construction technology for prehensive scientific knowledge, in order to calculate the volume of the works without heavy missed. The basis of which must be in accordance with state regulations engineering calculation rules, and the subprojects division engineering units, and in accordance with design drawings, design essential Love tender documentation requirements are calculated. Quantities of the project should have a testing general, the entries must be simple, while not appear Lousing wrong items Pricing should guarantee the correctness of the project. Should the requirements of the different grades separate engineering division, the situation was different。 Calculation of the target group of technical and economic indicators。 through tendering the project design into the market, pared to select the best design units. ⅱ Promoting the design bidding and design optimization campaign mode design units assessed by experts using scientific group France, in accordance with applicable, economic, aesthetic principles and advanced technology, reasonable structure to meet building energy efficiency and environmental requirements, prehensive assessment of the merits of the program design, selection of the best determination of the successful program. Successful investment program estimated to be close to the general construction project scope of investment. This means two design contracts will help design the program of choice and petition to ensure that the selected design advanced technology, unique novelty, adaptability, as well as to control the cost of the project. Design units should strive to improve their quality of the project design clever idea, contemporary reducing the project cost on to rack their brains to improve design quality, strive to put the design phase of the project cost control approval of the investment ceiling. ⅲ Strengthening the design stage of the design phase to strengthen supervision of the Commissioner to determine a reasonable design, mature technology, reduction in the construction phase major design changes and changes in the program, in the effective control of the project cost will play a role. 1 to the design of the project if the project supervision to get involved, excluding unfavorable factors may generally is excluded from the 80% errors. In the entire process of building cost control, construction began at best to save and invest 20%, the key lies in the construction phase of the identification and control costs. Supervision of the design phase include : Design Institute under the design drawings and notes help owners deal with different design options for the economy, capital expenditure to develop the preliminary estimates, to ensure that the investment can be most effectively utilized. With the owners of the Commissioner include: According to the Design Institute to provide design drawings and notes to help owners deal with different design options for the economy, capital e