Project construction is a capital-intensive, labor-intensive industry, in the project cost control management, it is easy to ignore the role of cost control on project investment, consequently, the project cost is gradually increased, difficult to control, thus reducing the economic benefits of enterprises. During the whole process of construction, the manager instructs the engineering technical personnel and the financial personnel to control the construction cost in an orderly manner, which is beneficial to reducing the expenses of labor, materials and so on, carry out regular, methodical and planned capital planning and control in all stages of a project. This not only reduces the risk to which companies are exposed, but also greatly ensures that they are profit maximization.