Optically activated shape memory alloy (SMA) is adopted to damage controlling of the composite materials in the paper. Experimental setup and results are also given, with SMA imbedded in the composite is adopted as test object. The conclusions are shown from the experiments: optically activated SMA can ensure normal operation of the composite materials by controlling the structure deformation of the composite materials of SMA imbedded;and, by controlling the time of optical activation of SMA, the structure damage of the composite materials of SMA imbedded is actively controlled. It is one of the functions of the smart structures. Results in this research are important to the application of the smart structures of the composite materials.