The logistics system of iron-making is a very complex production system, and it is characterized by continuity and discreteness in combination. It is difficult to establish the model of the complex system for a long time. The model of Petri net can not only characterize the structure of complex system, but also can describe the dynamic behavior of it, these features make the Petri net a wonderful tool to build the model of production process. Based on that, this paper sets up the model of the logistics system of iron-making by the Petri net. And then simulate this model by Stateflow which is an ideal tool of simulation. All these works is the foundation for the further analyzing of the logistics system.