Plastic pruning should be carried out on the basis of soil, fertilizer and water management (1), so as to regulate the growth and development of trees, keep the water balance of trees, and improve the survival rate of transplanted garden plants. (2) Adjust growth, flowering and fruiting, adjust the balance of similar organs, and cultivate a good tree shape. (3) Ensure the healthy growth of garden plants and promote the rejuvenation and renewal of trees. (4) Create unique artistic modeling.