Abstract: Objective The segmentation of the remote sensing image,which has important meaning,is the main step ofremote sensing image processing.There are a lot of researches focusing on this issue and someone has alreadyproposed some common methods.These methods have their advantage and fields of application,but most ofthem emphasize computer calculation too much.We translate the idea of image segmentation based on cellularautomata into the GIS platform as a new method to handle remote sensing image segmentation,implementingthe Remote Sensing Image Segmentation Algorithm based on Cellular Automata.This seg mentation methodblends human judgment in the process of segmentation and is very flexible.