Dating and tracing have been fundamental scientific issues in the study of pegmatite petrogenesis, mineralization processes, and rare metal enrichment mechanisms. Accessory minerals within pegmatites play a crucial role in this endeavor, serving not only as reservoirs for rare metals and rare earth elements but also as hosts for significant concentrations of trace elements like Th and U.This dual functionality positions them as an ideal probe for unravellingthe geochronology, petrogenesis, and mineralization processes of pegmatites, as well as tracing their magmatic sources. The accessory minerals, commonly applied for U- Pb dating in pegmatites, include zircon, columbite- groupminerals, monazite, cassiterite, titanite, allanite, xenotime, and apatite. However,the U- Pbisotope systems of these minerals can exhibit complex age spectra due to their diverse closure temperatures, mineralogical characteristics, and elemental behavior in fluids with varying compositions. These age spectra may reflect post- crystallization events in pegmatites, such as auto- metasomatism, late metamorphism, and fluid alteration. Therefore, prior to U- Pb dating, comprehensive microstructural investigations of accessory minerals from different pegmatite generations are essential. Employing techniquessuch as optical microscopy, scanning electron microscopy, cold cathodoluminescence, and laser Raman spectroscopyis crucial for deciphering the complex evolutionary history of pegmatites, encompassing multiple geological events, petrogenesis, and mineralization processes.Constructing an accurate spatiotemporal framework of tectonic- magmatic- hydrothermal mineralization events related to pegmatite formation is paramount for advancing our understanding of these complex geological systems.