Abstract: An analytical method for simultaneous determination of carbendazol, imidacloprid and five other pesticide residues in leek and shallot using liquid chromatography with electron capture detector was developed. The samples were extracted with acetonitrile, further cleaned-up on NH2-SPE, and detected by UV-detector. It showed that good linearity was obtained from range 0.03 to 4.0 mg/L with correlation coefficients of seven pesticides all above 0.99. The limits of detection were 0.006-0.05 mg/kg and the limits of quantification were 0.02-0.10 mg/kg. Fortified recoveries at 0.050, 0.10 and 1.0 mg/kg were from range 79% to 103% with relative standard deviations (RSDs) from range 0.70% to 6.12%, respectively. The results showed that the method was suitable for the determination of carbendazol, imidacloprid and five other pesticide residues in leek and shallot.