The invention relates to a switching test system for simulating a wireless channel and a method thereof, wherein, the system comprises a resource management and service module (11), a low-level communication control module, a main control module (21) and an execution module (23); and the method comprises the following steps: the resource management and service module (11) forwards a test script to the main control module (21) by the low-level communication control module; and the main control module (21) controls the execution module (23) to perform phase-shifting and attenuation operations, and feeds back test results to the interface of an upper PC for real-time display. The method and the system can simultaneously realize the control over changes of amplitude and phase of wireless signals, and load different types of signal interferences by a signal source (26) to simulate external interferences of a real wireless scene, and more realistically simulate various wireless channel environments, thus improving the reliability of wired switching tests.