The number of slender spindle-shaped main branches is large and the distance between main branches is close, and 2 ~ 3 main branches are selected every year. For example, choose three main branches in the first year and two main branches every year from the second year to the fourth year. When pruning in winter, 40 ~ 50 cm of the extension branches of the central trunk should be pruned every year. The extension branches of the main branches can be lightly pruned or not pruned to ease the growth potential and increase the number of short branches. When the extension branches of the central trunk reach a predetermined height, they need not be pruned. The main branches of spindle-shaped trees can open at an angle of 70 ~ 90 from late August to September in the growing season, so that the main branches are approximately horizontal. This approach tends to highlight the advantages of the central trunk and cause excessive growth of the upper part. Therefore, when pruning in winter, the extension branches of the central trunk with strong growth potential can be removed and replaced with branches with weak growth potential to balance the growth potential of the whole tree. For the competitive branches and imaginary branches that are difficult to control on the main branch, all of them can be removed.