Abstract：The steelmaking workshop is an important subsystem of steel manufacturing process system, the complexity of production process and difficulty of process control are the most concentrated expression on the multidimensional mass flow control in steel manufacturing process. Optimization and control in steelmaking zone is the key point of operation control in steel manufacturing process system. On the basis of summarizing research on mass flow control in several steelmaking workshops, the theoretical approach has been done for steelmaking system operating and controlling. The relationship between logic and realization for optimized running of steelmaking workshop has been deduced, and some supplement to control strategy of steelmaking workshop has also been made. Levels and guiding strategy of system optimized running have been expounded.