At first, the development process of the laser active detection method based on the cat's eye effect is introduced and the influence of the factors including the focus-deviations, detection distance and atmospheric turbulence on the cat's eye echo is analyzed. And then, the research process and status of laser damage charge-coupled device (CCD) are introduced and the mechanism and effect of laser damage CCD are analyzed. At last, the method of detecting the damage degree of CCD by cat's eye effect is introduced, and the developing direction of the method is proposed.