Rare lithium- beryllium metals are critical resources, both nationally and globally. The United States, Australia, and Japan have long listed Li- Be minerals among the raw materials prohibited for export, which only strengthens their strategic potential. In China, Li- Be mineral resources are not only abundant but also possess a superior metallogenic setting. However, their distribution is uneven and often covered by substantial Quaternary deposits. In recent years, field research has shed light on the presence of extensive granitic pegmatite lithium deposits in the Tianshuihai- Songpan- Ganze orogenic belt, thereby capturing the attention of both the domestic and international scholarly communities. The prominent Zhawulong granitic pegmatite lithium deposit in Shiqu County, western Sichuan Province, lies in the middle part of this orogenic belt. Identifying the main controlling factors of lithium resource accumulation and the rules of rare metal enrichment for this deposit will provide a foundation and guidance for the next stage of strategic prospecting along the Tianshuihai- Songpan- Ganze orogenic belt. This study presents a comprehensive analysisof systematically sampled lithologies, including spodumene- albite pegmatite dike, muscovite- albite pegmatite, tourmaline- albite pegmatite dike, Kajiya two- mica granite pluton, fibrous tourmaline aplite, and staurolite- biotite schist from the plutons periphery. LA- ICP- MS monazite U- Th- Pb isotope dating precisely identifies the formation age of the ZhawulongKajiya two- mica granite in the Late Triassic at 213~211 Ma, followed by fibrous tourmaline aplite at ~210 Ma, muscovite- albite pegmatite at 210~200 Ma.