To realize vessel’s accurate positioning and its real-time sailing monitoring，we can not only monitor and control timely ships’ safe operation，but also are able to help determining the accident responsibility by track playback and provide safe navigation and collision avoidance service for the vessel itself.The characteristics of the data for BDS and GPS location information in mountainous waterway are analyzed，and features such as the speed and direction of the vessel are extracted.A complete set of information fusion scheme algorithm is proposed to correct some error data of GPS or BDS.The experiments show that a reliable data source of navigation in the inland mountainous waterway can be ensured by the methods proposed for safety supervision.