【正文】 e on the pricing of the works. Different design units on the same project design are different. the same item of different design institute works between certain aspects of the project cost on the existence of differences between， We assume that with a design from two different design institute to design， Construction plans after the pletion of a requested advisory unit cost to do the budget， certainly different design institute the total cost of the project is absolutely not the same， and most of the difference between the two over 10% even more than the stage of the project cost management 7 30%， and not necessarily high cost than the design of low cost， and good design is often low cost， We all know that different people have different design styles and different levels， the design works naturally， therefore chosen to design units is the control on the first step. Through tender to select the design of the units is a good method， the tender documents to elaborate on this particular aspect of the requirements， cost control targets， and so on. Otherwise， in the subsequent design process design units will put an increase in the cost of the design requirements。s current stage of the project cost for the project management for the purpose of clearing price， and focusing only on the construction process of cost control， neglected before the start of the project investment decisionmaking stage of cost control. Investment decisionmaking phase of investment projects is estimated an important basis for decisionmaking. It the stage of the project cost management 4 has a direct impact on national economic and financial analysis of the results of the reliability and accuracy. Because of this phase is the preliminary work of projects， the information cannot be fully， parable works more or less that information accumulated relatively small， estimated inadequate and unscientific. Makes project cost management and cost workers is difficult at this stage do something. The various stages of the project cost control in the decisionmaking phase project cost control. Right project planning phase of the cost， many owners have the wrong understanding that the lower the cost the better. Cost control is not a unilateral issue， and should be a number of factors， a bination of practical， prehensive consideration. The construction project investment decisionmaking stage， the project39。 conduct a feasibility study to determine investment estimation and the final preparation of design task. At this stage， the project39。s many problems have also exposed. Generally speaking， the budget estimate is based on direct participation in the management of national economic activity as a precondition. Enterprise is not the actual economic entities. Due to the characteristics of the planned economy， and， at the time under the conditions of productivity， will inevitably bee a shortage in the economy. In severe shortage of modities under the conditions， as long as a certain level of investment， will be certain outputs. In this environment， the project planning and technical argumentation there can be no economic analysis. State control of the project cost constitute key factors equipment and materials prices， wages and taxes of artificial distribution. In this relatively stable economic environment， the budget estimate for the system approved project cost， help the government to carry out investment plans to play a major role. As the socialist market economic system established， requires us to predict project investment and control. In recent years ， international investment project developed to the requirements of prior precontrol and in the middle of control. China， the traditional practice in an objective light on the stage of the project cost management 3 the cause decisionmaking， implementation heavy， light the economy and technology， First， the consequences of victimization， Due to the technical personnel of the project technical and economic concepts and a weak awareness of cost control， cost management makes the quality difficult to raise. Project Cost control is difficult to achieve longterm goals. Second， the various stages of the project management view of the above circumstances， My first academia in the 1980s made the whole process of cost management and control concept， building departments will study the feasibility of projects and the budgets and final accounts to two extended at the request of the corresponding regulations put our cost management concepts and methods referred to a new height. Our task now is to be modern and cost management in line with China39。s construction industry how to effectively control construction cost of the construction and management of an important ponent part. However， the current budget for the construction projects estimate， budget， Super budget accounts for the super three is still widespread and that eventually led to a serious loss of control of project investment. Project cost management is the basic contents to determine reasonable and effective control of the project cost. As the project cost to the project runs through the entire process， stage by stage can be divided into Investment Decision stage， the design and implementation phases. The socalled Project Cost effective control is the optimization of the construction plans and design programs on the basis of in the building process at all stages， use of certain methods and measures to reduce the cost of the projects have a reasonable control on the scope and cost of the approved limits. the stage of the project cost management 2 Engineering and cost management work of the current status of project cost management system was formed in the 1950s， 1980s perfect together. Performance