The Yangshan granite is a multiple rock body,in which the Yantou rock body, Gaide rock body and Kukenzi rock body are rather similar to one ano- they in structure and texture, but their typomorphic characteristics of minerals are different, therefore, we can classify these rock bodies into two petrological} types. In the Yantou rock body and Gaide rock body, the degree of order of the K-feldspar is lower(0.37-0.74)，the Ab content of the K-feldspar is rela- tively high, the ratios of Fe0/Fe0+Mg0 and Al2O3/FeO+Fe2O3+Mg0+A1203 of the biotite are lower, ranging from 0.665 to 0.724 and 0.2557 to 0.375 res- pectively;while in the Kukenzi rock body,the degree of order of the K-feldspar has increase to 0.77-0.95, the ratios of Fe0/Fe0+Mg0 and A1203/Fe0+Fe2O3 +Mg0+A1203 of the biotite are higher than that of the Yantou-and Gaide rock body. Moreover the typomorphic characteristics of Zircons for the two types of the granites are obviously different. The paper has also confirmed that the conclusion drawn from the typo- morphic study of the minerals coincides with the result of petrological and geochemical studies of these granites.