The Narusongduo Pb-Zn deposit, located in the Longgeer-Gongbujiangda fault-block uplift belt of middle Lhasa Terrane, is characterized by two types of mineralization, namely the cryptoexplosive breccia type in the eastern part and skarn type in the western part. The magmatic rock related to the skarn type mineralization includes two kinds of quartz syenite porphyries with coarse and fine phenocrysts respectively. The results of zircon suggest that the emplacement and related mineralization of quartz syenite porphyries in the Narusongduo Pb-Zn deposit occurred in the main collisional stage of Indo-Asia continental collision.