In the transformation and upgrading of industrial structure today, intelligent construction can, to a large extent, solve the problems existing in the traditional construction industry, such as the separation of design and construction, high labor cost and the lack of overall management of the whole process system. As a result, it has become an important trend of the future development of the construction industry. This paper makes an in-depth discussion on the cost management of intelligent construction, analyzes the significance of intelligent construction to the whole process of project cost management, and summarizes the specific application of intelligent construction in engineering design, bidding, construction, operation and maintenance. However, while intelligent construction has become the future trend beyond traditional construction, it also poses many challenges to the existing mode of engineering cost management. This paper aims at forward some optimization ideas for your reference, hoping that intelligent construction will develop vigorously in the direction of efficiency, accuracy and system in the future.