Landslide mapping engineering geological planar graph and section plan are adopted to cope with drill prospecting, physical prospecting, prospecting trench, in-situ testing, borehole photography, civil test and other comprehensive prospecting methods. Geotechnical mechanics indicators and parameters are proposed after comprehensive analysis and study. Landslide stability was evaluated from qualitative and quantitative study. The landslide was cured by load reduction + slope protection + pre-stressed anchor and cable + drainage pre-stressed anchor and cable, effectively combine landslide rectification and bridge engineering closely.