Objective A method of UPLC-MS/MS for the determination of four ethylenebis dithiocarbamates in vegetables and fruits was established.Methods Samples were extracted with lcysteine hydrochloride and alkaline EDTA-Na₂ solutions， derived by methyliodide， prurified by QuEChERS method， and determined by UPLC-MS/MS.Results The limit of detection was 5 μg/kg for fruits and 10 μg/kg for vegetables. A good linear relationship was obtained between the peak area and concentration with the correlation coefficient over 0.998. The recoveries were from 82.3% to 115.1%， and the relative standard deviations were 2.3%-6.9%.Conclusion Ethylenebis dithiocarbamates in many kinds of vegetables and fruits could be successfully determined by the proposed method.