【Objective】 There are problems of excessive sugar accumulation and serious organic acid degradation in wine grapes cultivated in hot areas. As sunshade net has wide application value in fruit cultivation in hot areas, this experiment conducted sunshade net test on the main wine grape "Matheran" in the eastern foothills of Helan Mountain in Ningxia, aiming to provide theoretical basis for solving the problem of wine grape quality disharmony in hot areas.【Method】 In this experiment, the wine grape "Matheran" was used as the material. From the color transformation period (July 29) to the harvest period (September 22), sunshade nets of different widths and colors were set up on both sides of the grapes, and then the sugar components, organic acids and phenolic substances of the grapes and wine were analyzed.【Results】(1) RE1 treatment significantly reduced the sugar content of grape fruits, and sunshade treatment significantly inhibited the degradation of organic acids in grape fruits and wine; (2) Sunshade net treatment can increase the contents of total flavonoids in grape fruits, and reduce the contents of total tannins, total anthocyanins and total flavantriols in grape fruits; (3) Sunshade net treatment reduced the contents of total anthocyanins in wine, and BL0.6 treatment increased the contents of total tannins, total phenols, total flavonoids and total flavantriols in wine.【Conclusion】 RE1 treatment has the most significant effect on reducing sugar and increasing acid and increasing phenolic substance content in grape fruit, WH1 treatment has the most significant effect on increasing organic acid content in wine, and BL0.6 treatment has the most significant effect on increasing phenolic substance content in wine.