Along with the implementation of the national sustainable development strategy, the project construction has paid more and more attention to ecological protection. A large number of excavated or filled slopes have been formed in construction areas such as mines, highways, and water conservancy projects in the construction of foundation projects, which have destroyed the original ecological environment. The restoration of the slope ecosystem has promoted the research and innovation of ecological slope protection technology. This paper summarizes the research history of ecological slope protection at home and abroad, lists the research status of soil structure and indoor model test, and puts forward some problems existing in ecological slope protection technology at this stage, and looks forward to the long‐term development and research of ecological slope protection technology.