In order to make better research, enrich the content of quantitative and normalized grape germplasm descriptor system, 114 table grape cultivars from the National Grape Germplasm Repository in Taigu were studied, mainly 8 quantitative characteristics, including cluster length, cluster width, cluster weight, vertical diameter of berry, transverse diameter of berry，berry mass, average size of cluster and average size of berry. The results showed that the coefficients of variation of all the 8 characteristics were above 17%. The largest one occurs in berry mass (48.05%), while the smallest in cluster width (17.58%). The largest variation range is in cluster weight (100.0～1030.0 g), with the variation coefficient of 41.28%, while the smallest in transverse diameter of berry (1.3～3.5 cm), with the coefficient of 20.82%. These main quantitative characteristics were also analyzed by K-S test. The results showed that the values of characteristics could be divided into 5 grades by dividing points of（X-1.281 8 S）, （X-0.524 6 S）,（X+0.524 6 S） and （X+1.281 8 S）. Occurrence probability of 1 to5 grade was 10%，20%，40%，20% and 10% respectively. This research will provide reference for specification and data standardization of grape descriptor system.