At present our country constructs the enterprise generally have problems like the management level in the project construction is not high, system is imperfect and so on, creates the cost disbursement to be big, benefit low inferior not good aspect. In construction preparatory stage: Should strengthen the cost accounting, the low cost target, establishes the correct contract ideology; In construction stage: Should reduce the project cost as far as possible; In completion final accounts stage: Must sue for damages the implementation cost control using the construction.