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The paper discusses the experimental results conducted in Luochuan and Baishui orchards on content of certain heavy metals like Pb,Cd,Cr as well as pesticide residue on the bagged apples,double bagged apples and non-bagged apples respectively.There are two results.The content of certain heavy metals and pesticide residue on non-bagged apples are greater than those of bagged ones,while those of single-layer-bagged ones are greater than those of double bagged ones.Heavy metals are primarily concentrated on the apple peel.The content of cyfluthria in non-bagged apples is 0.03 mg/kg,3 times that of single-layer-bagged ones while none is found in the double-bagged ones.It is concluded that apple bagging is an effective measures to ensure the apple safety.