A method of applying system integration theory to real-time control on high arch dam construction was proposed to fit the strong complexity and randomness in the construction process. A system integrated framework of real-time control on high arch dam construction was designed. Then, the implementation process of the system integration was illustrated in detail from four aspects of information integration, function integration, technique integration and monitoring index integration. Finally, a real-time control system based on the network platform was built up. The application result shows that the theory and the system can realize integrated control and analysis dynamically, and improve the dam construction management level effectively.