Geonet is high density polyethylene (HDPE) and anti-uv additives, anti-aging, corrosion resistance and other properties. Used in highway, railway roadbed can effectively allocate load, increase the bearing capacity and stability of the roadbed, prolong service life. On the highway, railway slope laid geonet, can prevent geotechnical slide, protect water and soil, beautify the environment. Reservoir, river levee protection can effectively prevent landslides, laid in the coastal engineering in its flexibility is good, good permeability characteristics of impact energy is to buffer the waves.