Six kinds of summer vegetable including lettuce,red line spinach,cucumber,pepper,cow pea,green bean were studied in this paper.The results indicated that the average Hg content of the six kinds of vegetable were 0.00437~0.00637mg/kg in natural conditions,of which pepper was the highest and cucumber was the lowest.The accumulated value of Hg in the edible parts was the highest in different parts of the six kinds of vegetable,of which Hg accumu...