Abstract:Imidacloprid is one of the widely used pesticides in cabbage cultivation.The cabbage collected from different markets in Tianshui city was taken as example，the removal effect of imidacloprid residues by different cleaning methods was examined by detecting the residue of total cabbage and different parts of cabbage.The results showed that pesticide residue in cabbage sold in market was higher than those of supermarket，and the residues of imidacloprid in leafballs of cabbage were more than those in the side leaves.Moreover，washing cabbage by alkaline water or salt water was effective in cleaning imidacloprid residues，and the erasing rate reached 100 %.This study provided a reference for choosing of the shopping location of cabbage and cleaning methods of imidacloprid residue.