At present,composite structure has been widely used in aviation,aerospace,shipbuilding,weapons,construction,transportation and other fields.Especially foreign advanced military and civil aircraft and large fan blades are mostly choose composite material structure,the composite material structure in the process of serving dynamic damage detection and recognition is very important and urgent.In this paper,we use the fiber Bragg Grating(FBG)and the combination of Lamb wave technology applied in composite material plate detection.