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The unloaded quality factor Q0 and accelerated gradient Ea of RF superconducting cavity are important parameters for evaluating the performance of the cavity. In order to obtain the performance parameters of Nb sputtered superconducting cavity, a RF superconducting cavity performance measurement platform was developed to measure Q0 and Ea. The measurement platform is composed of a single-cavity cryogenic cabinet and a set of superconducting cavity performance measurement equipments such as signal source, power meter and data acquisition card. The single-cavity cryogenic cabinet provides 4.2K cryogenic environment by PLC controlled vacuum gauge, pressure sensor, temperature sensor and stepper motor. The superconducting cavity performance test program is developed based on graphical programming language LabVIEW and computer-operated remote control operation is realized. Through receiving the data transmitted by the USB communication interface of signal source and power meter, and collecting the signal of data acquisition card on PCI bus, the measured values and the test results of Q0 and Ea are displayed promptly after data processing. These data is stored in the database and can invoke them at any time. Result from the test proves that the measurement platform realizes the evaluation of Nb sputtered RF superconducting cavity, and the performance parameters meet the design requirements.