In order to improve the interoperability level of unmanned surface vehicles (USV), the architecture and test methods of USV interoperable system are studied. The development course and future prospect of USV are analyzed, and on the basis of in-depth study of NATO interoperability standard STANAG 4586, the interoperability test standard is formulated and the unmanned surface vehicle interoperability test case is designed. Through this method, a solid foundation for the realization and development of USV interoperable technology can be laid.