In recent years,the number of underwater tunnels in the trunk stream of the Yangtze River has increased.In response to the problem of the buried depths of underwater tunnels,we analyze requirements of GB 50139-2014 Navigation Standard of Inland Waterway,JTS 180-4-2020 Navigation Standard of the Trunk Stream Changjiang River,and JTS 180-3-2018 Navigation Standard of Waterways for Seagoing Vessel.Then we analyze and compare requirements in the three standards combining with two cases,and put forward suggestions for revising corresponding terms of standards.The results show that waterways characteristics and conditions of different tunnel sites are different,the three standards have a large difference in requirements of the buried depth,and some terms are even incomplete to the actual situation.If executed improperly,it will have a greater impact on the vertical layout of the underwater tunnel.It is recommended that buried depths of underwater tunnels in the trunk stream of the Yangtze River should not be used to determine the control line at a certain standard in the three standards.After comprehensive comparative analysis of the current situation of the river bed of the section of the tunnel,and possible scour,the scientific and reasonable clause should be implemented after comprehensive comparison and analysis.