According to the characteristics and present situation of smart substation and intelligent protection devices’ development in bay level, a kind of automatic test system for bay level’s protection device in smart substation is presented to improve the efficiency and automation of the test for devices. Based on the technical requirements of the automatic test system, the test system architecture, implementation method and testing process for the whole test system are put forward respectively. The template technique is used to establish the test template, the fault template and the verification template determining the test plan. After the test is completed, the test report can be generated according to the test template. The measurement system can realize different testing devices’ compatibility and the automation and intelligence of different function devices’ testing from different manufacturers.