Abstract: This paper presents a method and principle which employs pixel’s gray value, pixel's energy value and pixel's fractal value as pheromone to segment image through simulation of ant colony behavior. The method is tested on three aerial images. After the first process, the rough segmentation of image is produced. And the finial segmentation is achieved by using the elaborate method to process the rough results. In the end, quality of image segmentation is estimated by the means of measuring the matched point on image. The results expresses that what we put forward is promising method.