Virtual visualization technology research and related application is a research hotspot in today’s computer field,which also provides effective means for realizing harbor scene simulation.Based on the Open Flight hierarchies and Vega Prime Visual simulation,this paper analyzes the system architecture design and scene database optimization management and builds the digital port.Using the Vega API in Visual C++ environment,the real-time roaming process of the port is realized.With the improved berth allocation algorithm,this research opens up a new way for port construction and traffic management,and the future real visual simulation of the emergency command decision.