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The satellite network consists of several satellites and ground stations. The satellites communicate with each other through high-speed laser links. One of the core components of the satellite network is the routers. A typical feature of high performance routers is the separation of the data paths and the control paths. The control paths process data packets of the high-level routing protocol, the data paths process the data packets that need to be forwarded, and the data forwarding of different interfaces is performed independently. The critical paths of the routers are the data paths which affect the overall performance of the routers directly. After investigating the development history of the router technology, we discussed the typical structure and the key technologies of high-performance routers. Considering the requirements of the current satellite network system and the constraints of software and hardware environment, we have optimized the existing technology adaptively and confirmed the implementation method of the data paths of the satellite network router. The scheme meet the present requirements of satellite network, it can also meet the design requirements of subsequent high-performance routers After simple expansion.