The invention relates to a special transformer power supply mode terminal GPRS communication test system and a method. A electromagnetic shielding darkroom is installed in a test box body. An operation track is installed in a lower portion in the electromagnetic shielding darkroom. A tray is operated on the operation track through a stepping motor. A lower bottom top of the tray is provided with a tray lifting device. The tray lifting device is driven by a feeder motor. A tested special transformer power supply mode terminal can be placed in the tray. A integration tester and a signal interference apparatus are fixedly arranged above the electromagnetic shielding darkroom. A coupling antenna is fixedly arranged on a top end of the electromagnetic shielding darkroom below the integration tester. A warning lamp and a display are installed on the test box body. An electrical unit, a PLC control unit, a power supply system and a control unit are installed in the test box body. The system is formed by the electrical unit, a mechanical structure unit, the power supply system, the control unit, a feeder unit, a lifting positioning unit and an automatic conveying unit. Seamless coupling with an automatic assembly line is realized and a precedent that a GPRS communication module realizes whole performance detection on a special transformer power supply mode terminal whole machine is initiated.