This article researches the embedded ECS which is based on the digital hydrographic chart of the Changjiang River (version 2.0), completes the system module division and function design, discusses its key technology, realizes the software system under the Eclipse environment of Linux and carries out a practical test. The results indicate that the system is stable, efficient and able to fully demonstrate the real-time data provided by the Changjiang River waterway electronic public services platform and can guarantee the safety of ships during the voyage.