When pruning pear trees, some branches need to be cut short, some branches need to be drained, and some branches may have to be dried. Therefore, in the process of pruning pear trees, not only one pruning method is used, but many pruning methods are applied together. Therefore, the reaction after pruning is not a simple pruning or thinning reaction, but a comprehensive reaction of pruning, thinning and throwing planting. When two or more pruning methods have the same effect, the pruning reaction is very obvious; When the effects of different pruning methods are opposite, the pruning reaction may not be obvious because of the mutual cancellation of pruning effects. This is because, for a branch, one pruning method may play a leading role, but other pruning methods also have certain influence on this branch to some extent. When the extension branches of the trunk or main branch are lightly cut or thrown, it should be very obvious to weaken the growth potential of new shoots if the effect of light short cutting or light throwing is analyzed separately. However, if the auxiliary branches are cut off again at the lower part of the extension branches, the advantages after pruning will be concentrated at the top, so the new extension branches that are lightly cut or thrown can still grow vigorously; According to the general pruning reaction, short cutting can promote the growth of new shoots, and thinning can promote the growth of branches below the cut. However, if thinning is carried out on the upper part of the short cut branch, the interaction of the two pruning methods is concentrated on the short cut branch, so the growth of this branch is more vigorous than that of the simple short cut branch. Therefore, in the process of pear tree pruning, no matter which pruning method is adopted, we should pay attention to its comprehensive reaction in order to achieve the expected purpose. Before pruning pear trees, we should first observe the age, growth and flower amount of the trees to decide what pruning method to adopt. Under normal circumstances, for young trees and flourishing trees and trees with few flower buds, the pruning amount should be lighter, while for mature trees and weak trees, especially trees with many flowers, the pruning amount should be appropriately heavier.