Abstract: With the rapid development of China's marine economy, the illegal dumping of wastes into the sea has become increasingly frequent and serious. As one of the key marine special projects during the 14th Five Year Plan period, the supervision of marine dumping activities urgently needs to promote the new mode of "Internet +" off-site supervision. In order to do a good job in the off-site supervision of marine dumping, it is very necessary to design and implement the national marine dumping supervision and management system (hereinafter referred to as the system). The system adopts multi-layer architecture and has strong scalability. The functional modules include license approval, dumping area planning, supervision and management, statistical analysis, demand side management, basic information, etc. The system mainly starts from two aspects: the main body of marine dumping and the marine dumping area. On the one hand, it uses information means to approve and control the dumping license of dredged materials, fishery processing wastes and other wastes in the whole sea area; On the other hand, it can automatically identify the dumping ships at sea based on the ship trajectory, effectively master the dumping at sea, timely track the illegal operations, and achieve the goal of off-site supervision.