简要介绍了氧同位素分析的最新方法———激光探针法的主要特点，并详细评述了激光探针分析在氧同位素地球化学研究中的应用。某些矿物内部存在氧同位素组成的变化，构成氧同位素环带。与其他化学成分环带一样，矿物氧同位素环带也可以分为生长环带（包括次生加大的环带）和扩散环带两种。变质岩中石榴石经常保存有明显的生长环带，而矽卡岩中石榴石、变质花岗质岩石中锆石和蚀变花岗岩中石英等矿物均可以记录岩石形成早期的某些氧同位素特征。由于这种差异与岩石的形成环境有关，因此通过对矿物氧同位素组成的微区分析可揭示岩石的某些成因信息。在缓慢冷却的变质岩中，磁铁矿的氧同位素环带常是扩散作用形成的，由此可以确定岩石的冷却速率。通过对脉石英的激光探针分析，可以研究流体的流动机理。变质岩的氧同位素微区分析为ｐＴｔｆ轨迹研究提供了有力的武器，而氧同位素示踪可用来解决流体在变质岩形成过程中的作用问题。 A brief introduction to the latest method of oxygen isotope analysis - the main features of the laser probe method, and a detailed review of the application of laser probe analysis in the oxygen isotope geochemistry. Some minerals within the oxygen isotope composition changes, constitute the oxygen isotope ring. Like other chemical components of the belt, mineral oxygen isotope belt can also be divided into growing zone (including the secondary increase of the ring) and the diffusion zone two. Garnet in metamorphic rocks often have obvious growth zones, and some skarn in garnet, metamorphic granitic rocks and quartz in altered granite can record some oxygen isotopic characteristics in the early stage of rock formation. Since this difference is related to the rock formation environment, some of the genetic information of the rock can be revealed by the micro-analysis of the oxygen isotopic compositions of minerals. In slowly cooled metamorphic rocks, the oxygen isotopic ring of magnetite is often formed by diffusion, from which rock cooling rates can be determined. Through the laser probe analysis of quartz, fluid flow mechanism can be studied. Oxygen isotope analysis of metamorphic rocks provides a powerful weapon for the study of pTtf trajectories, and oxygen isotope tracing can be used to solve the problem of the fluid’s role in the formation of metamorphic rocks.