Abstract: Prestressed anchor flexible retaining method is a new retaining and protecting technology used for retaining of deep excavations and treatment of slopes. In practice, the method has good performance in terms of economy, technology, safety and so on. It is used in the design of slope retaining project of Bohai Park of Xiamen University, and good performance is achieved after the completion of slope retaining construction based on long-term displacement monitoring work. The slope retaining has been finished for ten years, from the analysis of monitoring data, the displacement and the settlement of surrounding buildings are small, and the slope retaining is currently in good condition. It is proved that the application of the prestressed anchor flexible method in the permanent slope projects is successful.