Abstract: This study was carried out with apple trees aged 15～20 years.in two apple orchards where asomate had been used as a fungicide for 7～10 years.Arsenic contents in soil and in tree tissues such as roots,cortices,shoots,leaves and fruits were investigated.The results show that the arsenic accumulated in fruits did not exceed food hygienic standard;the arsenic contents in cortices,shoots and leaves were several to more than ten times higher than those in uncontaminated orchards;The highest arsenic contents were found in cortices and spur leaves;Arsenic contents in shoots and leaves were closely related to those in cortices;Arsenic was slightly accumulated in top soil,but will have no significant effect on soil eco-environment. 

Key words: apple tree, asomate, residue, arsenic