Polyester Geogrid adopts high strength, high modulus, and low shrinkage twisting industrial polyester fiber as raw material. It is warp knitted with oriented structure and in the condition of no bending among warp and weft direction. Its crossing points are bundled and bended together by high strength long polyester fiber forming tough conjuction. Then it forms into mesh size product after coated with high quality oil or water soluble PVC which improves its strength, various techcnical standards and gives full play of its mechanical property.