Abstract: At present, the domestic construction market is improving day by day, and the criticality of project cost management has gradually emerged. In order to promote the sustained and stable development of the domestic construction industry, we must fully understand the importance of project cost management, adopt effective management measures, and only implement comprehensive dynamic supervision during construction operations, so that construction units can obtain higher economic And social benefi ts. And this is undoubtedly a long-term work. During this period, every company is required to actively participate in it, and the country is also required to provide strong support. Only with the full cooperation and coordination of all relevant parties can it be effective. Promote a sound system.