First, the deputy cadres should choose one from the other. 2. High-quality cedar requires that the lower branches are longer and gradually shorter upward, and the growth of the side branches in the same layer must be balanced to form a beautiful tree shape. Therefore, attention should be paid to the balanced growth of each side branch when pruning. When balancing the tree potential, the branches with strong growth potential can be shrunk and cut, and the parallel branches or drooping branches with weak growth potential can be selected instead. 3. Selection and retention of large lateral branches. The lateral branches of cedar are irregularly rotated on the trunk, and the number is large. 4. Deformation of deformed trees. The transformation method of this tree is to introduce branches to fill the void, that is, to pull the nearby large side branches with ropes or wires. You can also graft new branches, that is, in places with large gaps and no branches, graft strong buds by abdominal grafting to sprout new branches. 5. Adjust the tree potential. The lower branches of some cedars grow too vigorously, and the solution is to take back the strong branches, overlapping branches and parallel branches at the lower part and trim them; Spraying upper plants with 40-50 ppm gibberellin (GA) solution every 20 days to promote their growth.