对Ｓｍａｒｔ材料／结构中的光纤传感原理进行了探讨，并进行了实验研究。首先介绍了Ｓｍａｒｔ结构中常见的埋入式光纤传感器的特点及其工作原理，然后提出了应用多模光纤在编织复合材料Ｓｍａｒｔ结构中进行应变场测量的方案，建立了实验装置，给出了实验结果并进行了讨论。 The principle of fiber sensing in Smart material / structure is discussed, and experimental research is carried out. Firstly, the characteristics and working principle of embedded optical fiber sensor which is common in Smart structure are introduced. Then the scheme of measuring strain field in multi-mode fiber is proposed. The experimental device is set up and the experiment The results were discussed.