It uses the principle of three-dimensional confinement and is suitable for foundation reinforcement, cushion and surface protection. It is a three-dimensional structure. By changing its depth and hole type combination, rigid or semi-elastic plates can be obtained, which can greatly improve soft and loose filling. load-carrying capacity of the material. In civil engineering, geocells of different specifications can form cushions with different cohesion, different reinforcement strengths, and different thicknesses with soil, sand, stone and other fillers. These cushions can be placed at the required positions according to the requirements of the project to reinforce the subgrade of railways and highways, protect slopes, and build retaining walls. Geocells are more and more widely used in China. They can not only be used in the treatment of soft subgrades, excavation and filling connection treatment, settlement difference lap treatment, retaining walls and other load-bearing and solid-weight retaining structures, but also in the fields of ramps and other structures. Protection of waterways. Laying these flexible open three-dimensional earth cells in place and filling them with locally available materials such as mixes, topsoil or concrete can economically and efficiently protect, improve related structures, and reduce project costs.