Traditional EPC projects often suffer from a disconnection between design and construction，and design institutes often fail to play the role of leading advantage due to the problems of internal management. This paper is based on a typical international project with cash settlement. Fully grasping the overall and technical advantages from the perspective of the design institute and overcoming the internal management problems with the mode of the design department leading，with the top-level design formed by “One Intention”，“One Boat”，“One Chessboard”，and “One Family”，and by the mode of “Combination Management” and the system of “Earn-out Commitment”，the enthusiasm of project management team is fully motivated and the management objective of creating value through technology value from technology is achieved. The successful implementation of the project proves the effectiveness of such innovative management，which may serve as reference for similar projects.