Phased-array antenna test system and method

The invention provides a phased-array antenna test system and method. The system comprises a vector network analyzer, a synchronous control unit, an auxiliary antenna, a tested antenna and a microwave darkroom. The test system is provided with a radio frequency link and a synchronous link; and the vector network analyzer is at least used for displaying a phased-array antenna beam establishment process, a phased-array antenna frequency switching process or a phased-array antenna convergence process. The method comprises the following steps: building the phased-array antenna test system; the synchronous control unit sends a control signal to the tested antenna and sends a synchronous pulse signal to the vector network analyzer at the same time, and the vector network analyzer is triggered to start testing; and observing the output waveform of the vector network analyzer, and reading test data according to the output waveform of the phased-array antenna beam establishment process displayed by the vector network