Based on the analysis of the development status of Changjiang digital waterway and intelligent waterway transportation system，the article proposes the system architecture of Changjiang intelligent waterway.Then，through the research of key technologies such as stage forecasting and intelligent navigation，we solve the bottleneck technology of Changjiang intelligent waterway.Finally，through the construction of the demonstration project，we complete the transformation of research results and provide the technical guidance for the development of inland intelligent waterways.