The Laiziling pluton in southern Hunan is the oreforming pluton of the Xianghualing Sn—Pb—Zn polymetallic orefield, and mica commonly appears in its magmatic—hydrothermal evolution process. Methods: On the basis of petrographic research, this paper has carried out major and trace element analysis of the Laiziling granite for the magmatic mica (mica in granite) and hydrothermal mica (mineralized greisen, geode mineral aggregates and striped rock) was analyzed by electron probe. Results: The results shows that the Laiziling pluton is a set of high K calc alkaline potassiumbasalt, metaluminous peraluminous granite. The mica in the Laiziling granite is mainly zinnwaldite. From early to late, the contents of FeO and Al2O3 decrease, while the contents of K2O, F, MnO and Rb2O increase, and the oreforming elements such as Pb, Zn and Fe increase gradually. Conclusions: The hydrothermal mica is divided into the following two types: ①Represented by mineralized greisen and geode mineral aggregates, formed in the early stage of fluid exsolution, without the participation of surrounding rock components, the type of mica evolved from zinnwaldite to lepidolite, mainly precipitated Fe, Zn, Pb, Mo and other metallogenic elements. ②Represented by striped rock, formed later than mineralized greisen and geode mineral aggregates, with the participation of wall rock components, the mica type changes from from protolithionite to eastonite, haughtonite to flogopite, mainly precipitates Fe, Sn and W and other metallogenic elements. With the evolution of the fluid, mica showed a gradual decrease in the content of SiO2, F, K2O, and a gradual increase in the content of MgO, and the corresponding oreforming elements gradually transitioned from rich in Pb, Zn, Fe, Mo to rich in Fe, Sn and W.