Jiu-fen was famous for it´s gold mine in the past years。Recently, it has been developed into a place of sight seeing。Because of high density construction and over use of land,some hill slope became highly potential landsliding area。In order to realize the reason of sliding,all the test reports and relative documents are necessary information which include former investigations and my own observation on structure movement and crack。Through thoroughly analysis with these data to find suitable prevention work planning。