1. An apparatus for testing performance of a Radio Frequency Identification (RFID) system, comprising: a drive motor configured to be driven at a preset speed; a turntable disk configured to be fixed on a rotating plane of the drive motor, said turntable disk including a gadget to fasten an under-test RFID label in such a way that the under-test RFID label is perpendicular to the plane and rotates with the turntable disk; a reader antenna configured to be set in a fixed position around the turntable disk and connected to an under-test reader, wherein direction of main lobe axes of the reader antenna and direction of main lobe axes of an antenna built in the under-test RFID label are in the same plane.