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In order to real-time and accurately obtain the multi-point wind speed of all the key regions and rotate speed of the big and small mesh rollers during running of the mesh roller-type unginned cotton and film remnant separator, the automatic monitor system was designed and developed based on virtual instrument technology combining with a variety of sensors. Finally, the value acquired by system was compared with the measured data of the handheld laser tachometer and the four-channel intelligent pressure data collecting instrument for wind speed and volume. Experimental results showed that the maximum relative error of rotate speed of the big and small mesh roller was 0.68%, and the maximum relative error of wind speed was 8.95%. The result indicated that the monitor system met the measurement requirements for collecting wind speed and rotate speed and the system was reasonable and practical.