90.017％。Real-time test for an agricultural machine was very complex in the field and the traditional method of test for consumed power of cornstalk breaking was taken by wire. Now a new method of consumed power measurement was introduced. By means of wireless local area networks technology, the consumed power of cornstalk breaking was measured easily and safely in the field. By adopting orthogonal regression experiment, the results showed that when the speed of corn chopper was 2.9 km/h and the rotary speed of knife axis was 597 r/min, the optimal parameters of consumed power and the percent smashing quality were respectively 2.98 kW and 90.017%. 