The reason why hdpe geocell are effective and have attracted attention from the engineering community should start with their basic principles. In foreign literature, its principle is described as "a honeycomb shaped three-dimensional confinement system that can significantly improve the performance of ordinary filling materials in load-bearing and insect erosion control applications over a large range." Its key principle is three-dimensional confinement. As we all know, when a car is driving in the desert, it will leave two deep tracks, with the pressed parts sinking deeply and the sides of the tracks rising high. If the vehicles behind continue to move along the ruts, the sunken part will further sink and the raised part will further rise until the raised part rubs against the chassis and the sunken ruts bury half of the wheels, making it impossible to move forward. The reason for this is that when an external load acts on the surface of the foundation, according to the Prandtl theory and Taylor theory, it is known that under the action of concentrated load, the active zone 1 is compressed and sinks, and the force is decomposed and transmitted to the transition zone 2 on both sides. The transition zone 2 then transmits to the passive zone 3, and the passive zone will deform and bulge without restriction.