Abstract: This paper proposed a multimode integrated wireless communication system for the marine unmanned platforms. The system utilized an intelligent communication gateway technique to effectively integrate various marine communication methods, including satellite communication, Beidou short message communication system, mesh, Lora, ultra-short wave communication, WiFi, underwater acoustic communication, optical communication, electromagnetic coupling communication and etc. Moreover, in order to realize the capability of a reliable two-way communication between the marine information elements and the shore based data center, which can work continuously under all kinds of climate conditions, a real-time, reliable and seamless two-way communication link is built between the shore based data center, the mobile deployed surface mother ship, the mobile deployed marine buoy platform, and the mobile deployed underwater motion carrier.