[Objective] To explore the evolution and susceptibility of landslide activity intensity in meizoseismal area of Wenchuan earthquake in order to provide important practical basis for landslide and debris flow risk management. [Methods] Twelve debris flow basins were selected as study area along Longxi River in Longchi Town, Dujiangyan City, Sichuan Province. Based on the interpretation analysis of the remote sensing images after the earthquake, the evolution characteristics of the landslide after earthquake were studied. At the same time, the probability comprehensive discriminant analysis method and the analytic hierarchy process were used to analyze the susceptibility of landslide. [Results] The 825 co-seismic landslides occurred in the region after the earthquake, and the intensity of landslide activity reduced gradually. From 2009 to 2017, 376 new landslides occurred outside of the co-seismic landslide areas. In February 2017, the number of active landslides reduced to 368, accounting for 30.6% of the total landslides. The area under curve (AUC) method was used to test the multi-period evaluation results, the accuracy was 75.6% to 81.4%, and the evaluation results were satisfactory. [Conclusion] The number of active landslides after earthquakes and the area of high sensitive zone in meizoseismal area show a decreasing trend, indicating that the landslides after earthquakes are in the process of gradual recovery, but the activity intensity of geological hazards is still far higher than that before the earthquake.