Abstract: Based on the mapping of the granitic series and types, strontium isotopic trend surface analyses and isobaths of Moho surface, the deep-level sourced Yangtze series （ series Ⅱ ） granitoids are mainly distributed in the eastern part of South China. The shallow-level sourced Nanling series （ series I ） granitoids are mainly distributed in the central and western parts of South China. The Ningwu type （ type Ⅱ 1 ）, Dexing type （ type Ⅱ 2 ） and Fujing-Zhejiang cosatal type （ type Ⅱ3 ） granitoids are distributed in the middle-western, central-eastern and southeastern coastal parts of South China, respectively. The Zhuguangshan type （ type I 1 ）, Darongshan type （ type I 2 ） and Guangdimiao type （type I 3 ） granitoeds are distributed in the central, western and northwestern parts of South China, respectively. The generation of granitoids is in close relation with the uplift or depression of the mantle （ Moho surface）. The deep-level sourced granitoids （series Ⅱ ） , especially Ⅱ1,Ⅱ 3 types mainly occur in the uplift areas of the mantle, and shallow-level sourced granitiods （ series I ）, especially I 2, I 3 type granitoids, mainly occur in the depression areas of the mantle.