Abstract:A brief summary of the principle of strain measurement with fiber Bragg grating is made with focus on the domestic and foreign fiber Bragg grating in the research and application of strain measurement.Analysis is carried out of the preparation process,polymer packaging,chemical etching and composite packaging of fiber Bragg grating in measurement range,measurement accuracy,working life,multiplexing and practical effect.It is shown that the fiber Bragg grating to actually get more extensive application still needs to do more research,to find simple encapsulation method in order to achieve higher accuracy and greater range of signal detection.