Dating and tracing have always been key scientific issues in the study of pegmatite petrogenesis and mineralization processes, as well as rare metal enrichment mechanisms. Accessory minerals are not only important carriers of rare metals and rare earth elements in pegmatites, but also contain abundant other trace elements such as high U-Th content, making them an ideal probe for studying pegmatite chronology, petrogenetic and mineralization processes, and to trace the magma sources. The accessory minerals that are commonly used for U-Pb dating in pegmatites include zircon, columbite-tantalite, monazite, cassiterite, titanite, allanite, xenotime, and apatite. Due to differences in closure temperature, mineralogical characteristics, and elemental behavior in fluids with different properties, U-Pb isotope systems of different accessory minerals in pegmatites often exhibit complex age spectra, which may record potential late geological processes in pegmatites, such as auto-metasomatism, late metamorphism, and fluid alteration. Therefore, based on previous studies on mineral microstructures such as optical microscopy, scanning electron microscopy, cold cathodoluminescence, and laser Raman spectroscopy, in-situ U-Pb dating and geochemical analysis of major and trace elements and isotopes of accessory minerals from different generations of pegmatites are carried out, which is beneficial for a comprehensive understanding of the evolution history of multiple geological events and pegmatite petrogenesis and mineralization processes. It is of great scientific significance to construct an accurate spatiotemporal framework of tectonic-magmatic-hydrothermal mineralization events related to pegmatite formation.