Evaluation of pesticide residues was carried out in cucumber to determine the residues of carbendazim which collected from different local markets in Egypt. During a 14-day, treated cucumbers samples were gathered and analyzed to determine the carbendazim residue quantity.  A QuEChERS sample preparation has been applied with liquid chromatography provided with mass spectrometry (LC/MS-MS) to evaluate residual of tested fungicide. Two transitions ions was obtained from multiple reaction monitoring (MRM) after that higher sensitivity transition used for quatification but the lower sensitivity transitions used to confirmation analysis of carbendazin. The method was validated by setting performance parameters such as linearity, precision, recovery, limits of detection (LOD) (0.45 µg Kg¹) and limits of quantification (LOQ) (0.9 µg Kg¹). Good correlation coefficient R² 0,9992 in pure solvent curve and R² 1.000 for matrix-matched curve, which given the elevated calibration curve quality. The carbendazin recoveries founded in fresh cucumber samples of 10 replicates were found to be in the range between 119.11 to 124.45% (% RSD > 3.5) for two fortification levels (0.010 and 0.070 mgKg¹). The intra-day repeatability RSD value was 3.26%, while the inter-day repeatability RSD value was 5.27%. Matrix effect of carbendazim in cucumber was evaluated and the results showed that carbendazim had a soft matrix effect (6.53).Samples of tested fungicides showed distinct contamination levels up to a certain time period (7 days), after which no residues were identified between 11-14 days.