Biaxial geogrid is a kind of polymer macromolecules as the main raw material, adding a certain anti-ultraviolet, anti-aging additives, through the Biaxial geogrid stretch to the original distribution of scattered chain molecules reoriented in a linear state, Extruded into a thin plate and then punch the rules of the hole network, and then longitudinal stretching made of high-strength geotechnical materials. In this process, the polymer is oriented in a linear state and forms a long oval mesh structure with uniform distribution and high node strength.