Abstract: Based on the monitoring data of Jinpingzi landslide，the accuracy and applicability of the model is verified.The practice has proved that due to the latest data added to the system in real time，the prediction accuracy of the dynamic forecasting model is higher than that of the non-dynamic model，which is more applicable to engineering.Meanwhile，the monitoring data is stored based on SQL Server，and C # is used to prepare a model validation and prediction program，thus greatly improving the efficiency of the modeling and the prediction.The program is easy to use and highly applicable.

Key words: Dynamic, Unequal time interval grey model, Landslide, Deformation analysis