A testing system for a RF module includes a metal casing formed a testing space therein, a RF testing socket disposed inside the testing module, and a pressing manipulator penetrating through the metal casing. A shielding material layer is disposed on the internal surface of the metal casing so that the RF signal is isolated inside the metal casing. An end of the pressing manipulator extends into the testing space. The pressing manipulator is controlled automatically and provides for a pressure on a RF module disposed on the testing module so as to execute a testing process. As mentioned above, the testing set for a RF module can prevent from RF testing interference and the testing manufacture efficiency is improved.