The engineering construction should avoid the problem of limited project integration due to the different construction subjects. By adopting the assembled secondary retaining wall, the gate shaft added at discharge outlet, the extended slab of reinforced concrete of house adjacent to the bank section and the consideration of reasonable heap load margin behind the wall in Suzhou River Environment Comprehensive Improvement Phase IV Embankment Up-to-standard Reconstruction Project, the connection problems of the later project are considered as a whole at the same time of solving the practical engineering problems.