The invention provides an automatic testing system including a testing tool, a network analyzer connected with the testing tool through a conductor wire, and a data processor connected with the network analyzer and loaded with a test management program. The test management program comprises a testing tool IP distribution unit, a testing tool IP verification unit matching the testing tool IP distribution unit, a test function configuration unit, a test data storage unit, a determination result data configuration unit, a test result determination unit, and a cyclic test configuration unit. According to the invention, the network analyzer is arranged to analyze the voltage standing-wave ratio of an antenna product clamped on the testing tool; the test data storage unit is arranged to store test result data of the network analyzer; and the test result determination unit is arranged to cooperate with the determination result data configuration unit to determine whether test data obtained from testing by the network analyzer are qualified.