In recent years, the cast-in-place concrete retaining walls commonly used in water transport and water conservancy engineering have encountered increasing difficulties in satisfying the demanding requirements of energy saving, environmental protection, and economy of the industry.Meanwhile, the prefabricated revetment structure has gradually attracted attention, but it lacks practical application in water transport and water conservancy engineering.Accordingly, via analyzing a practical example of prefabricated L-shaped retaining walls in a revetment project, the paper summarizes some key and difficult points in the engineering application of prefabricated revetment structures.In addition, it probes into the key technologies in the design and construction, such as engineering construction conditions, revetment structure selection, splitting and connection of members, member fabrication, and lift installation.With these efforts, it formulates a complete set of knowledge on the key technical points of the design and construction of prefabricated L-shaped revetments, proffering references for the application of prefabricated revetments in similar projects.