The growth period and dormancy period of Sophora japonica are divided into growth period pruning and dormancy period pruning, also known as summer pruning and winter pruning. Summer pruning is from April to August of that year, and winter pruning is from February to 10 of the following year.

Pruning in growing season. Pruning, coring, leaf picking and cutting off dead branches, diseased branches and excessive branches are mainly carried out in the growing season or after flowering of Sophora japonica, and should be carried out in time according to the growth and cultivation requirements of Sophora japonica. Some Sophora japonica generally do not need to be pruned frequently, such as azaleas and camellias. In order to keep the symmetry and beauty of the tree, we should cut off the tops of some branches instead of pruning them vigorously. Lianas only need to cut off branches of diseases and insect pests, dense branches and over-aged branches, and keep ventilation and light transmission.