Abstract: On the basis of the detailed geology surveying and testing for the Moluocun landslide,the disintegration evolution and development trends of the landslide are revealed.According to the relationships of Quaternary sediments and the ages,the traces of deformation and failure of the special stratum,and the geological events,the historic geology of the Moluocun landslide is analyzed and its stability is studied.The research results shown that the Moluocun landslide is stable as a whole,but local may be disintegrated as the result of small landslides,and the water level change is only a little affection to the whole stability of the Moluocun landslide.