As many types of embedded module interface performance testing had become more networking, the stable and reliable communication mechanism was designed to implement the test system with client/server mode. Based on the mainstream technology of network communication—socket network programming, took advantage of the CAsyncSocket under MFC platform, and combined with the message response mechanism of windows platform, the special purpose communication protocol was designed and the design of the console platform and the test platform was analyzed . The result of the running of the test system indicates that the error-free transmission of the test information is achieved with the characteristics of portability and exception handling , and satisfies well the requirement of networking test system.