Abstract:Relying on an actual project of ecological slope protection project in the western section of Tianjin-Shijiazhuang Expressway, the subgrade slope stability test and ecological monitoring test in the flood detention area are designed and carried out to verify and analyze the slope stability and ecological effect, which provides the technical reference and practical experience for the design and construction of ecological slope protection for subgrade slopes in flood detention areas. The research results show that the stability and ecological effect of the new ecological slope protection are better than the traditional slope protection, and the new ecological slope protection technology has a wide range of application prospects.