when pruning after planting, firstly, select a strong branch as the main vine culture, cut off the part of the tip that is not dead and aging, and cut off a part of the side branches under the cut to reduce competition and ensure the advantage of the main vine. And then traction is carried out to make it adhere to the pillar. Only 2 ~ 3 main branches born on the trunk are left as auxiliary branches, and the rest are all thinned and cut off. In summer, the auxiliary branches are cored to inhibit their growth and promote the growth of the main branches. When pruning in the winter of the following year, the central trunk can be shortened to the strong bud, and 2 ~ 3 branches from both sides of the trunk can be selected as the main branches, and the strong buds can also be intercepted in a short time, and some other branches can be left as auxiliary branches. When selecting and leaving side branches, it is necessary to leave a certain distance without overlapping branches, which is conducive to the formation of a well-defined and evenly distributed branch structure. Prune once a year before germination in winter and spring, straighten out the main side vines, and remove the over-dense branches and dead branches, so that the branches and leaves are evenly distributed, so that all parts can be ventilated and see the light, which is conducive to more flowering.