Abstract: 【Objective】 To compare and analyze the effects of different retention buds on the growth, yield and quality of the merlot grape in the hope of screening out the amount of buds suitable for the growth of the grape carp, and providing a scientific basis for the future application of the method of retaining fruit on the production of alfalfa grapes. 【Method】 6 years' merlot were taken as test materials, the form of a tree was set up, the mother branches distances were arranged 4, 6, 8 cm to determine the processing in fruit growth development period, the branches and pith roughness, fruit grain weight, total soluble solids and soluble sugar content, and the total polyphenols, flavonoids, anthocyanins, tannin content such as quality index, and comparative analysis and conduct comprehensive evaluation. 【Result】 The results showed that different amounts of bud retention had an effect on the growth, yield and quality of merlot grapes.The vertical and horizontal diameter of the branches was the thickest at 6 cm, the medullary diameter was the smallest at 8 cm, the length of the fourth section was the shortest at 6 cm, and the length of the fourth section was the longest at 8 cm.The yield decreased with the increase of bud spacing, and the panicle weight increased slightly with the increase of bud spacing.The content of phenols, tannins and anthocyanins in fruits was the highest at 8 cm bud spacing, and the content of flavonoids was the highest at 6 cm.Overall, the yield of 6 cm treatment was moderate, and the yield and fruit quality of 8 cm treatment were good. 【Conclusion】 Plant-shaped merlot grapes with 8 cm bud spacing were more conducive to plant growth and fruit quality,which provides high quality raw materials for producing fine wines.