A laser dazzling effect assessment of optoelectronic systems based on local features and image quality in the target region was proposed. The feature points were used to describe the local feature of the image. The structural similarity index was computed to reveal the image quality. The assessment utilized the point feature matching algorithm to locate the target region in the scene image. Then the ratio of the number of feature points and the unsaturated area and also the structure similarity index in the target region between the original image and dazzled image were computed. The final assessment index was achieved by the product of these three factors above. The implementation of the assessment to a typical dazzled image suggested that this assessment can provide a more broad range of index value and more obvious nonlinear variation than that obtained by only the structural similarity index in the target region, which indicated that this assessment method suggested in this paper has the ability to show more detail of laser dazzling process and more suitable for the assessment to lase-dazzling effect to image system.