Abstract: This study first introduces the operation flow of the container port and port business subsystems, then establishes, on the container dock operation system, integration model, berth system model and loading/unloading operation system model by using Petri net modeling technology. The model is analyzed, given the nature of model and verified. The modeling approach makes dynamic model and function running of the system closely linked and set the stage for analyzing the dynamic characteristics of the system, So as to facilitate the improvement and optimization of practical business system.