Abstract: Based on the data of wine grape's sampling from field experiments during 2004 and 2005 in six provinces in the Northern China,the relationship between quality of wine grape and meteorological conditions was analyzed,The results showed that the key periods affected the quality of wine grape were the fruit expanding to fruit-coloring and fruit coloring to mature period.The precipitation and precipitation-thermo coefficient(R) during July and August were the most important factor affected total sugar content of wine grape.As R7-8>130mm and K7-8>1.62,the total sugar content would be less than 170g/L which was the minimum sugar content reguirement for wine grape.The total acid content slowly increased as the R increased.The tannin content formed parabola relationship with sunshine duration in August.The pH of wine grape increased as the increase of mean maximum temperature during anthesis to harvest period,and of the evaporation during fruit expanding period.

Key words: Wine grape, Wine grape, Quality, Meteorological condition, Total sugar content, Total acid content, Tannin, Cabernet sauvignon