The geodynamic implications of continental granite remain a controversial topic. The author believes that the granite can be divided into two series of ocean and continent. The granite produced in the ocean basin and the edge belongs to the ocean series, whereas the granite produced in the continent belongs to continental series. The most important geodynamic implications of ocean series granite is to distinguish tectonic settings, the same of continent series is to judge the crust thickness and temperature conditions. Granite can be divided into Adak-type, Himalaya-type, Zhemin-type, Guangxi-type and Nanling-type on the basis of Sr-Yb content. Different types of granite are related to the granite formation depth: Adak-type granite rich in Sr and poor in Yb is in equilibrium with eclogite facies and produced in the thickening crust; Himalaya-type granite with poor Sr and Yb is in equilibrium with granulite facies and produced in thick crust; Zhemin-type poor in Sr and rich in Yb and Guangxi-type rich in Sr and Yb are in equilibrium with amphibolite facies and produced in normal or thin crust; Nanling-type granite is also in equilibrium with amphibolite facies and produced in the thinnest crust. Himalaya-type granite belongs to the low temperature series, whereas Zhemin- type granite to the middle or high temperature series; Nanling-type and Guangxi-type belong to the high temperature series. Adak-type granite can appear in each temperature series. The application of classification of granite can restore ancient crustal thickness and temperature conditions at the bottom of the lower crust and can also trace changes of the situation and trend of the change of crustal thickness and temperature with time in some regions.