The authors introduced the pruning technique to decrease fructification of Platanus acerifolia (Ait.)Willd., and analyzed statistic of decreasing rate of fructification and diameter of tree -crown and length of annual branch after pruning. The result showed that the decreasing rate of fructification exceed 80.0% within three years through such technique. In addition, the annual vegetal increment in tree-crown and length of annual branch for the Platanus acerifolia (Ait.)Willd. pruned was more than which was not be pruned at the same condition.