Abstract：In general，most slopes undergo a long evolution process before they fail. It is therefore important to monitor and evaluate the evolution process of slopes. By means of mass transfer modeling with variations of chemical and isotope composition along the groundwater flow paths，the mineral forms，quantity，rate and trend of the mass exchange between rock-soil materials and groundwater can be determined and the modeling results may provide scientific bases for slope reinforcement and landslide prediction. Taking a roadbed slope as an example，the application of the method to evolution evaluation of slopes is introduced.
