Abstract: Depending on the Marine environmental monitoring data source, data as the core, around the data acquisition, data storage, data analysis and evaluation, information release and so on,the whole process informatization has been carried out by different data sources. Each link of data flow has a corresponding results and implements the coordinated operation, making up the Marine environmental monitoring informatization system. This paper expounds the coordinated operation principle of marine environmental monitoring informatization system on each part. The key parts of the marine environmental monitoring informatization system which acquires successful application in practice have been summarized. From the perspective of practical application, this paper puts forward the future emphasis and developing direction of Marine environmental monitoring information.