The water depth is the most important indicator of waterway dimensions to characterize the navigation condition of waterway，waterway maintenance decision-making，navigation guidance of ships，etc.To fit the demand of dynamic monitoring to the condition and information service of waterway，we propose the technology solution using the dynamic water-deep data resource from navigating commercial ships based on Changjiang ENCs，including the water-depth dada access，transmission，storage，processing，visualization ,application，etc，which are collected by navigating commercial ships，and based on the analysis of current water-depth data collecting methods of inland waterway and by fully using the functions of the Changjiang ENCs terminal system for ships.Furthermore，we put forward suggestions to help implementing the technology solution.By this scheme，we can improve the monitoring ability for the waterway water-depth，expand the data resource of waterway water-depth，reduce the costs for collecting the waterway water-depth data，and improve the efficiency of waterway water-depth information service.