The invention relates to the technical field of marine traffic, and particularly discloses an intelligent monitoring system for navigation marks on the sea. The intelligent monitoring system comprisesa collecting module, a sending module and a navigation information providing module, wherein the collecting module is used for collecting sailing direction information of ships passing by a coveragearea of corresponding navigation mark devices by adopting the navigation mark devices distributed on the sea; the sending module is used for sending alarm information to information receiving centersof the ships heading to the corresponding directions according to severe weather distribution conditions of the current weather forecast; and the navigation information providing module is used for providing navigation information for being away from an area of the severe weather to the information receiving centers of the ships, thereby being effectively performing navigation on ships on the sea,and avoiding accidents on the sea.