光参量啁啾脉冲放大（OPCPA）技术是有望实现大型超高功率超短脉冲激光装置的关键技术。但是，参量荧光仍然是影响超短脉冲信噪比的重要因素。回顾了近半个世纪以来关于OPCPA系统中参量荧光的理论和实验研究，就其产生的机理进行了讨论，总结出影响其空间模式和光谱分布特性的参量。在此基础上，分别从注入信号光能量、饱和与过饱和放大等方面总结了参量荧光的抑制方式。通过上述方法能够有效提高OPCPA系统的信噪比，从而为高质量物理实验提供条件。

Optical parametric chirped pulse amplification (OPCPA) is the most promising key technology to achieve the large ultra-high power and ultrashort pulse laser system. However, parametric fluorescence is still an important factor affecting the temporal contrast of the system. We review the theoretical and experimental research of the parametric fluorescence, discuss the mechanism of its generation and point out the parameters which affect the spatial-temporal pattern and spectrum distribution. Based on that, we summarize the suppression of parametric fluorescence in the aspects of the input energy and the saturated or over-saturated amplification. Temporal contrast of the OPCPA system can be improved by the means mentioned above, and it satisfies the requirements of high quality physical experiments.