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Measurement system is a crucial equipment in the wind tunnel, its performance is important to the accuracy, reliability and operational efficiency of the wind tunnel test. In recent years, the original measurement system of the F0.5 meter hypersonic wind tunnel revealed problems, like accuracy declined, lack of generality, inconvenient for maintenance etc. And the system could not meet the increasingly complex demands of the wind tunnel test. In order to solve these problems, we established a new 64 channel measurement system based on PXI bus, the system is put in to use after strict test. The application of the new system improve the accuracy, reliability and automaticity of the data measurement, broaden the comprehensive performance of the F0.5 meter hypersonic wind tunnel.