The invention discloses a performance test equipment of signal transmission network and a method thereof, and the performance test method comprises the steps that: A. a test model is set to configure various parameters; B. the test model is submitted to a foreground process module and test-start instruction is sent to the test model; C. the test starts and the foreground process module confirms flow models with different types and performance statistical data that needs to be collected according to the parameters of the test model, and sends test messages to the tested protocol process in sequence to yield the corresponding flow on the basis of the flow models with different types; simultaneously, the foreground process module collects the performance statistical data and the collected performance statistical data is returned to a program module of a background PC, and then stored and displayed. By adopting the invention, business impact can be avoided and the performance statistics which test self performance of each protocol of Sigtran can be realized under the various flow models while the test model can be flexibly defined along with the development of requirement.