The progress of science and technology has driven the development of the society, and the application of threedimensional simulation technology in all walks of life has greatly improved people's life. Maritime affairs is an important part of comprehensive transportation. The improvement of maritime supervision and service level is conducive to the construction of domestic first-class economic law enforcement system and international leading maritime management institutions. Now the application of 3D simulation technology to maritime supervision is studied, aiming to improve the quality and efficiency of supervision, make maritime supervision more convenient and have further guarantee. Maritime supervision of ship environment is often more troublesome than personnel management. In the process of monitoring and control, many uncontrollable environmental factors greatly increase the difficulty of supervision, among which the port environment is more complex, which is a difficulty of monitoring and control in maritime supervision. This paper uses MapInfo Professional, Win Topo, Multigen Creator and other operating software to construct the Qingdao port visual simulation environment. The port topographic cloud map of Qingdao Port was captured, and the collected image information was converted into data through MapInfo Professional and Win Topo software, and then modeled by Multigen Creator software. After completing the general terrain outline, the established simulation scene was made more realistic and realistic through some detail processing and optimization means. By describing the establishment of 3D simulation terrain in Qingdao Port, the application status of the simulation technology in ship environment and port management is reflected, which provides a reference for the deeper application of 3D simulation technology in maritime supervision.

Abstract
1. Introduction
2. The Application of 3D Simulation Technology in Maritime Regulatory
    2.1. concept definition
    2.2. current situation and foreground
    2.3. Technical difficulties
3. Realization of Simulated terrain of Qingdao Port
    3.1. Establishment of 3D Simulation terrain of Qingdao Port
    3.2. Establishment of 3D Model Library in Qingdao Port Area
    3.3. Processing of Virtual Scene in Qingdao Port Area
    3.4. The impact of simulated terrain realization in Qingdao Port on the Marine industry
4. Conclusions
References

• Hao Zhitao(Dept. For Ships and Port Engineering, Shandong Jiaotong University)
• Yang Zhuoyi(Dept. For Ships and Port Engineering, Shandong Jiaotong University)
• Jiang Shiyuan(Dept. For Ships and Port Engineering, Shandong Jiaotong University)
• Liang Hongguang(Dept. For Ships and Port Engineering, Shandong Jiaotong University)
• Zhou Fenglei(Dept. For Ships and Port Engineering, Shandong Jiaotong University)