Abstract: According to the requirements of Communication Based Train Control （CBTC）system for urban rail transit test specification of interoperability, the test method of CBTC system is studied. This paper introduced the test platform, test flow and development of test cases of CBTC system, took the handover scenario of Zone Controller (ZC) during the operation of CBTC system as an example, and took Vehicle on Board Controller (VOBC) as the tested object, extracted the test requirements and wrote the test case. The test system obtained the state information of the equipment from the peripheral equipment simulation system, compared to the expected feedback results in the script. The test results verify the availability of CBTC system test method.