Abstract: In order to improve testing efficiency of Urban Transit embedded software, this paper proposed a automatic test framework for Urban Transit embedded software based on SOA(Service Oriented Architecture), pointed out the testing difficulty of Urban Transit embedded software, and given the corresponding testing strategy, expatiated the main function and architecture of automatic test framework.The implementation of testing framework based on SOA and the testing process were given. The examples and test results showed that the automatic test framework was with well universality, extensibility and real-time, was suitable for automatic test of Urban Transit embedded software.