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Abstract In order to understand the effect of atrazine residue in soil on the successive vegetable，this experiment add atrazine solution in soil to assay its affection on photosynthesis and growth of cucumber，cowpea，pepper and choy sum．Results showed that when the atrazine concentrations in soil reached 0.21，1.84，0.24，0.11 mg·kg-1，respectively for to cucumber，cowpea，pepper，and choy sum，the largest Fv/Fm would reduce 10%．When these 4 vegetables were under the dosages of 0.2，2，0.2，0.1 mg·kg-1，respectively，ETRⅡ of these 4 vegetables were significantly declined and finally resulted in inhibition of fresh weight growth by 50%．The sensitivity of these 4 vegetables to atrazine residue in soil was in the order of choy sum ＞ cucumber ＞ pepper ＞cowpea．The results of this study indicated that Fv/Fm could be a useful parameter for assessing the risk of injury caused by atrazine residues at early stage of plant growth，and ID10 of Fv/Fm was a critical value telling weather the rotated vegetable crops were affected by atrazine residue．
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