With the content,timeliness,reliability requirements of element information service from the Yangtze River waterway to the shipping,combining with the variety and complex evolution of the elements of the Yangtze River waterway,we present a new method based on the dynamic information from navigating ships to overcome the insufficient frequency based on the professional measurement in surveying and mapping,also the lack of space perception based on fixed point digital perception used Internet of things.The key technologies of this new method are analyzed with multisensor integration,multi-source information quality evaluation,and multi-source data fusion.A comprehensive perception system with terminal perception,hydrographic survey,and navigating ships perception will be reconstructed to expand element information sources of waterway,and improve the interaction between ships and the land center.It will also help to improve the element perception ability of inland waterways which get the dual influence of natural evolution and human activities，and improve waterway information service quality to navigation.