Abstract: Based on the introduction of the habit of unicellular bacteria and honeybee,this paper presents the conception of chemotactic motion,which is called chemotaxis,information transition procedure in nature biologisms (ant,honeybee,bacteria)by the consistency variance of pheromone.This paper uses it for solving the problem of image segmentation and discribes the detail procedure of this new method. We provide the quality evaluation through the experiment of segmenting some aerial images. The comparison results show that this method is a potential image segmentation method.