简要介绍了弱光非线性光学领域中一些研究方向的进展，如弱光非线性光子学材料中的缺陷结构、介观量子相干系统中光传播动力学和慢光非线性光学等，着重描述了近期在新型激子与紫外弱光非线性光学效应、位相耦合与光速调控以及非相干空间孤子阵列诱导光学晶格与光非线性传输行为等研究中得到的研究结果。弱光非线性光学将成为非线性光学应用领域中的一个重要分支。

Some recent work on weak-light nonlinear optics is presented,such as the defect structure in weak-light nonlinear photonic materials,light propagation dynamics in mesoscopic quantum coherent ensemble,optical nonlinearity at ultraslow group velocity of light and so on. The recent research results in new type exciton with ultraviolet weak-light nonlinear optical effect,the phase coupling with light speed control,and optical lattices induced by spatial soliton pixels of incoherent light with the light nonlinear propagation characters are also described.