It is the foundation for Changjiang waterway element information collecting and services to make data exchange protocol. According to the requirement of the Changjiang digital waterway planning, this paper puts forward the data exchange system, analyzes the technical requirement of current Changjiang waterway element information collecting and services, sets up the data exchange program, and establishes a test system for waterway element information collecting and service, to provide a technical support for the construction of digital waterway and intelligent channel.