Abstract: After the introduction of fundamental principles of Laser Induced Fluorescence（LIF）measurement technique，the progress of the key elements of LIF technique，including laser，fluorescence tracer and the camera is reviewed according to temporal and spatial resolution. Then the application of LIF in the field of liquid mixing and mixing-sensitive reactive flow is summarized. The trends of LIF measurement technique are also pointed out. How to choose the right high-speed camera in accord with the laser is the main factor that determines the temporal and the spatial resolution of LIF measurement technique in the study of mixing. In the meantime，the application of LIF in the R&D of industrial processes will depend on how to achieve high-precision test with the miniature and low-cost LIF experimental system.

Key words: laser induced fluorescence, liquid mixing, laser, high-speed camera, reactive LIF

摘要： 介绍了激光诱导荧光测试技术（laser induced fluorescence，LIF）的基本原理，结合时间分辨率和空间分辨率，分析了测试系统所包含的激光器、示踪剂和相机等关键要素的最新进展情况，在此基础上对LIF技术在液体物理混合、混合-反应流等领域的应用进行了综述，并展望了这一先进测试技术的应用前景，提出如何实现激光器与高速相机的有效匹配是制约其同时在高空间分辨率和高时间分辨率下研究混合过程的重要因素，实现测量设备的小型化、高精度、低价格，将直接决定LIF测试技术在实际生产过程开发中的应用。

关键词: 激光诱导荧光, 液体混合, 激光器, 高速相机, 反应-LIF