Geocell is a kind of geo-product with alveolate and three-dimensional structure which processed the thermoplastic sheet by the ultrasonic welding machine and other methods. Its special three-dimensional structure makes it possible to form the different viscous force, different reinforcing bar intensity and different thickness of cushion. It is widely used in the fields of the reinforcing of railway, strengthening roadbed, protect of field bank, building of earth protection wall, and so on.