INTRODUCTION project a corporate image window and effectiveness of the source. With increasingly fierce market competition, the quality of work and the construction of civilizations rising material prices fluctuations. uncertainties and other factors, make the project operational in a relatively tough environment. So the cost of control is through the building of the project since the bidding phase of acceptance until the completion of the entire process, It is a comprehensive enterprise cost management an important part, we must organize and control measures in height to the attention with a view to improving the economic efficiency of enterprises to achieve the purpose. 2, outlining the construction project cost control, the cost of the project refers to the cost and process of formation occurred, on the production and operation of the amount of human resources, material resources and expenses, guidance, supervision, regulation and restrictions, in a timely manner to prevent, detect and correct errors in order to control costs in all project costs within the intended target. to guarantee the production and operation of enterprises benefits. 3, the cost of the construction enterprise principles of construction enterprises control the cost of control is based on cost control of construction project for the center, Construction of the project cost control principle is the enterprise cost management infrastructure and the core, Construction Project Manager in the Ministry of Construction of the project cost control process, we must adhere to the following basic principles. 3.1 Principles lowest cost. Construction of the project cost control, the basic purpose is to cost management through various means, promote construction projects continue to reduce costs, to achieve the lowest possible cost of the objective requirements. The implementation of the principle of minimum cost, attention should be given to the possibility of reducing costs and reasonable cost of the minimum. While various mining capacity to reduce costs so that possibility into reality; The other must proceed from actual conditions, enacted subjective efforts could achieve a reasonable level of the minimum cost. 3.2 overall cost control principles. Cost Management is a comprehensive enterprise-wide, and full management of the entire process, also known as the three of management. The full project cost control is a system of substantive content, including the departments, the responsibility for the network and team economic accounting, and so on, to prevent the cost control is everybodys responsibility, regardless of everyone. Project cost of the entire process control requirements to control its costs with the progress of construction projects in various stages of continuous, neither overlooked nor time when, should enable construction projects throughout costs under effective control. 3.3 Dynamic Control principle. Construction of the project is a one-time, cost control should emphasize control of the project in the middle, that is, dynamic control. Construction preparation stage because the cost is under the control of construction design to determine the specific content of the cost, prepare cost plans, the development of a cost-control program for the future cost control ready. And the completion of phase cost control, as a result of cost financing has been basically a foregone conclusion, even if the deviation has been too late to rectify. 3.4 principle of management by objectives. Management objectives include : setting goals and decomposition, the goal of responsibility and implementation of the aims of the inspection results of the implementation, evaluation of the goals and objectives that form the management objectives of the planning, implementation, inspection, processing cycle, PDCA. 3.5 responsibility, authority, in light of the profit principle. Construction of the project, project manager of the department, the team shouldering the responsibility for cost control at the same time, enjoy the power of cost control, project manager for the department, Teams cost control in the performance of regular examination and appraisal of implementation of a crossword punishment. Only to do a good job duties, rights, and interests combining cost control, in order to achieve the desired results. 4, the construction cost control measures cost control measures. Reduce the cost of construction projects means, we should not only increase revenue is also reducing expenditure, or both also increase savings. Cutting expenditure is not only revenue, or revenue not only to cut expenditure, it is impossible to achieve the aim of reducing costs, at least there is no ideal lower cost effective. Project Manager of the project cost management responsibility for the first, comprehensive organization of the project cost management, timely understand and analyze profit and loss situation and take prompt and effective measures; engineering technology depa