In order to speeding up the breeding process of callery pear, Pyrus calleryana Dcne., the effect of different concentrations of 6-BA and GA₃ on growth of the 1 year callery pear seedlings were studied. The resultsshowed that the stem diameter of 400 mg/L 6-BA treatment was the maximum. The height of callery pear in 800mg/L GA₃ treatment was the maximum but its stem diameter was not favored. So, we can spray appropriate concen-tration 6-BA in production, for example 400 mg/L, to increase its stem diameter for grafting.