A method was developed for the simultaneous separation and determination of carbendazim，simazine，atrazine，chlorpyrifos，decamethrim,acetochlor and cypermethrin in corn and durra by micellar electrokinetic capillary electrophoresis.The conditions for separation and detection of a mixture of seven pesticides were optimized.The results showed that，under the optimized conditions of running buffer：20 mmol/L Na2HPO4+50 mmol/L SDS+5% acetonitrile（pH 9.0)，separation voltage：20 kV，detection wavelength：222 nm，ambient temperature:25 ℃，pressure injection：30 mbar×10 s，the analytes were successfully separated within 28 min.The calibration curves of seven pesticides were linear in the range of 5.0-150 μg?L-1.The detection limits were in the range of 0.6-3.0 μg/L.This method was successfully applied in the analysis of seven pesticides in corn and durra samples with spiked recoveries of 97%-108% and RSD of 2.2%-4.7%