对频率分辨光学开关法(FROG)飞秒脉冲测量技术进行了综合阐述。在FROG 法基本原理分析的基础上，以测量技术原理发展变化为主线，介绍了三种不同瞬时响应非线性效应下—三阶非线性效应、二级非线性效应和交叉相位调制(XPM)效应，所构成的不同FROG 测量结构的研究现状和发展方向，并综合分析了三种分支技术的性能特点。对各种不同的FROG 测量结构进行了详细的比较，得到它们的优缺点及发展前景，为FROG 飞秒脉冲测量技术以后的发展提供研究思路和参考。

This paper reviews frequency resolved optical gating (FROG) femtosecond pulse width measurement technology. Based on analyzing the principles of FROG, the change and development of measurement technology in theory as the main line, the research status and development direction of different structures of FROG measurement are introduced according to three different transient responses of nonlinear effect, which are third-order nonlinear effect, second-order nonlinear effect and cross-phase modulation (XPM) effect. And the characteristics of three types of branch technology are analyzed comprehensively. Comparing different structures of FROG measurement in detail, their strengths and weaknesses and prospects are obtained. It provides research mentality and references for FROG femtosecond pulse width measurement technology.