Shenzhen-Zhongshan Channel is located in the core area of the middle reaches of the Pearl River.The Pearl River Estuary it crosses is one of the busiest waterways water areas with the largest ship density in China.The bridge section of the channel,with a total length of approximately 17 km,adopts a long-span design to cross several important navigational channels including the Lingding Channel,Longxue South Channel,and Hengmen East Channel.After the project is completed,it will become a permanent cross-sea structure,changing the original navigational environment of the bridge area waters.It is necessary to give full play to the navigation aids in the bridge area to ensure the navigation safety of bridges and ships.At present,the current domestic and international standards mainly impose principled requirements for bridge navigation aids,which are evidently lacking in practical guidance for the complex navigational environment and numerous design and installation constraints of large-scale cross-sea bridges.This paper takes the design scheme of the navigation aids in the bridge area of the Shenzhen-Zhongshan Channel as an example.Focusing on the different navigational needs of the main bridge section and the non-navigable bridge sections of large-scale cross-sea bridges,it analyzes the main factors affecting the design of navigation aids in the bridge area,and proposes the main issues and corresponding solutions in the design process of navigation aids for large-scale cross-sea bridges.The navigation efficiency is maximized through the effective connection between bridge navigation aids and water navigation aids.At the same time,it provides reference and guidance for the revision of industry standards and the design of navigation aids for other large-scale cross-sea bridges.