As one of the 172 major national water conservancy projects designated by the state council, the flood storage and detention area of Honghu east sub-block is an important part of the overall flood control system in the middle and lower reaches of the Yangtze River. It is an important engineering facility to deal with the excessive flood in Chenglingji area and ensure the flood control safety of Jingjiang embankment and Wuhan City for the sub-storage areas, it is particularly important to protect the river ecosystem and the wetland ecosystem so that it can fully utilise the ecological service functions and achieve sustainable development of the green industry through investigation and analysis, this paper also provides several suggestions for solving problems while analysing the problems.