Abstract: A meteorological early warning and decision-making system for the has innovated the port-based meteorological service platform by using diversified large data analysis and display technology with data-driven scenario changes. It presents the “running” port area of meteorological changes. It innovates a trilateral cooperation mechanism based on the “multi-early warning” guide of maritime, meteorology, and port authority. In combination with the port area topography and actual business needs, the system can be used to fulfill data fusion and generate fine service products for the port area.