Sri Lanka Colombo South Container Terminal Project is an international BOT project. To meet the development of container transportation and requirements of operation and management, according to the project layout characteristics, we analyze the problem of land layout in BOT and put forward optimization ideas and optimization proposals of wharf structure level, yard layout, gate layout and auxiliary layout, which satisfies the BOT and employer’s requirement, gets the international engineer’s approval, and ensures the successful construction. It provides reference for similar international port projects.