SeaRay is the first generation of wave glider developed by our country. It has excellent performance and high reliability. Its application research including marine environment observation,underwater target detection, cross-domain communication and information transmission has been completed. Supported by National 863 and National Key R&D Program,the technological maturity and application research of the SeaRay wave glider platform have been further improved,laying a solid foundation for the application in military,marine environmental monitoring and marine resources exploitation in China. In this paper,the latest progress in underwater acoustic positioning and cross-domain network communication of the SeaRay wave glider is introduced,and the main technical problems in the application are summarized.