Taking Longkou City in Shangdong province as an example, the DOM with the scare of 1:10000 is gotten by the imagine processing of enhencement ,geometric correction and resolution mergence by using ERDAS IMAGINE image conducting software. Land interpretation symbol has been established based on the site investigation in Longkou city. By using MAPGIS software, through interactive interpretation between people and computer, land in target areas are vectorized and present information of land utilization has bee..