Abstract: Based on satellite navigation, spatio-temporal entities, web geographic information system (WebGIS), spatial databases, etc., key information on ship attributes, real-time positions, historical paths, associated relationships, and operating statuses has been extracted, leading to the construction of ship entity resources and the establishment of a ship trajectory analysis system. The system provides functions such as map services, trajectory data management, trajectory visual query display, trajectory spatio-temporal analysis display and analysis model parameter configuration. It enables management and analysis of multi-source, multi-temporal and diversified ship trajectory data, presenting ship element characteristics and analysis results, increasing information value density, and enhancing query and analytic abilities. Thus, it enhances the efficiency and accuracy of ship trajectory analysis, serving as a more effective support for ship trajectory analysis business and related applications.