Based on the remote sensing SPOT-5 reflection picture and intensity map of soil erosion of Dongzhen reservoir watershed,this paper applied GIS technology's information management and spatial data disposal or analysis,concerned with studying the region landscape,extracted information of the landscape pattern characteristics,chose indexes of analysis for landscape pattern,made quantitative research and searched into some laws in order to discuss and reveal the relationship between landscape pattern and soil erosion procession,and the influence of human activities to landscape pattern and landscape ecology procession as well.Research shows: reservoir landscape types and ecosystem uneven distribution;Continuing up erosion intensity,diversity index diminishes,landscape dominance becomes evident,uniformity reduces;the higher rate of decay of Dongzhen reservoir garden plot and agricultural land landscape is first cause of soil erosion.