According to the advantages of Windows CE in user graphic interface, design a human-machine interface based on real-time operation system Windows CE. Adopt eMbedded Visual C++, which Developing environment is eMbedded Visual C++ of Windows CE programs’ main developing tool to gives a kind of software flow chart of interface. The prototype can add functions according to requirements, and realize the human-machine interaction. Testing shows that the interface high dependability and comfort of operation in testing processes.