附录1How to improve construction project cost control A construction project the importance of cost control of construction project cost control of projects through the entire process, that is, decision-making phase of the project, the project design stage, project implementation and completion stages of phase related to the construction project cost control. Statistics show that the decision-making stage in the project and design stage, the impact of the possibility of project cost 30% -75%, and in the implementation phase of the impact of the possibility of project cost is only 5% -25%. It is obvious that the key to cost control is the implementation of the project prior to decision-making and the design phase of the project, the project is the deciding factor in decision-making, and is a key factor in design. Control project cost not only to prevent breakthrough investment limit, meaning a more active is to promote the construction, engineering, and design units to strengthen the management of human, material and financial resources with limited resources can be fully utilized to obtain the best economic and social benefits . So do a good job in project cost control, to ensure and accelerate the economic development thinking has a certain significance. Second, construction project cost control measures for construction project cost control is effective decision-making in the investment phase, design phase, construction phase contract, the contract implementation phase of the construction project cost control in the amount of the approved project cost limit, occur at any time to correct deviations, and ensure the realization of investment objectives of the project to various construction projects in a reasonable manner to the use of human, material and financial resources to obtain better investment returns, and ultimately to enable the completion of audited accounts to control the amount of the budget to avoid the three super - phenomenon, in order to effectively control the project cost should be doing the work of the following aspects: (a) decision-making phase of the project cost to determine the cost of control engineering and control projects through the entire process, but the technical and economic decision-making stages of policy-making, project cost of the project very much affected by something, especially to determine the level of construction standards, building site selection, technology selection, equipment selection, etc., is directly related to the level of project cost. According to the data in various stages of construction projects, investment decision-making phase of the impact of the highest degree of project cost, for a total of 80-90%. Therefore, the decision-making phase of the project is to determine the content of the decision-making project cost basis, a direct impact on decision-making phase of the various construction phases of the project cost to determine and control whether or not scientific, reasonable question. First, the preparation of estimates of the need for investment. Preliminary estimates of capital investment is an important part in the work of one. Decision-making document, it is research, analysis of the construction project an important basis for economic effects. Work in the economy should be reflected in the design of practical content, reflecting the building of the regions economic situation, started from the estimates reflected the accuracy and completeness of the construction investment project. Second, the investment must be designed to estimate a true reflection of the investment estimates should be realistic and reflect the design of content, which requires designers and project from the engineering content of the size of a true reflection of design intent. The main technology to be relatively more programs, programs to optimize the design of the program is not only technically feasible but also economically more reasonable. Therefore, the project economy-building programs from the beginning of the optimization, it should penetrate into the whole process designed to, in accordance with the principles of project cost management, a reasonable estimate of projected changes in a variety of dynamic factors, as far as possible, do not play enough to stay investment gap This is the preparation of estimates of key investment is also an important basis for the next stage. (B) the design phase of project cost control project engineering design was to conduct a comprehensive planning and specific intent to describe the process of implementation is the soul of the construction, dealing with technology and the critical link in economic relations, is to determine and control the focus of project cost stage. First, optimized design, the design of effective control of project cost if the quality and try to meet the national requirements, functions are used to meet requirements related to construction projects only a one-time investment to meet the applica