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In China, the construction of ecological green grid originated from bamboo cage, sheep pen skill and Li Bing and his son's first application in Dujiangyan Project 2000 years ago. This is the traditional construction of the grid. Nowadays, as a new skill, new skill and new material, the new structure of Ecological Grid has been successfully applied to water conservancy project, highway and railway. In the maintenance works of projects and levees. The organic connection between engineering structure and ecological environment is well realized. Comparing with some traditional rigid structures, it has its own advantages, so it has become the preferred structural type in the world to maintain river channels, manage landslides, prevent debris flow and avoid falling rocks. The grid is suitable for high flow rate, severe erosion, and bank slope seepage. The stone cage is a flexible structure, and its self adjustment is good for uneven subsidence. Porosity of the shore, gaps between the stones are conducive to animal habitat, plant growth, aquarium above the surface of the stone cage can be used to beautify the use of soil bags to meet ecological considerations and safety needs. Eco-green grid structure is a kind of retaining and stabilizing method commonly used in slope. It is an economical, quick construction method, suitable for local conditions, filling soil, gravel and natural gradation, and so on. It is an agile retaining or water-retaining structure, so it is willing to be selected by engineering circles. (1) economy. Just put the stone in a cage and seal it. (2) construction is concise without special skills. (3) strong resistance to natural damage, corrosion resistance and adverse weather effects. (4) it is capable of accepting large scale deformation without collapsing. (5) the mud between cracks in the cages is conducive to the production of plants and can be integrated into the surrounding natural environment. (6) excellent permeability, which can avoid damage caused by hydrostatic force. (7) save shipping costs. It can be folded and transported for installation at the construction site. (8) progress is fast and conducive to rush hour: there are many groups to work together, parallel, and streamlined.