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Aircraft cable shielding is necessarily well-grounded to establish a complete shielding loop to prevent the interfering on the internal circuitry from the complex electromagnetic environment. Therefore, grounding reliability test is particularly necessary. In this test system, NI CompactRIO chassis is used as the main core to build hardware test platform, co-operating with host computer, auxiliary circuit and test tools, and LabVIEW visual programming language is used as the software tool for system design. The program on the host computer, utilizes a state machine to implement the user interface and the overall control logic of the system. The FPGA is programmed to drive the hardware to complete signal generation and acquisition simultaneously. The real-time processor program communicates with FPGA using Direct Memory Access technique, the feedback data from the auxiliary circuit is collected and processed by the method of Fast Fourier Transform, and further the vector voltage and current method is applied to calculate the loop impedance of the cable shielding. Measurement results show that:the aircraft cable shield grounding reliability test system based on LabVIEW is able to complete grounding reliability tests with high accuracy.