Geogrid convenient to splice and fix

The utility model relates to a geogrid convenient to splice and fix, which belongs to the technical field of geogrids and comprises geogrid bodies and inserting and fixing pieces inserted and fixed between the adjacent geogrid bodies. The inserting and fixing piece comprises a U-shaped rod, a movable conical ring and a conical anchor rod; each movable conical ring is composed of conical ring pieces and insertion rods, each insertion rod is movably connected between every two adjacent conical ring pieces, one end of each insertion rod is inserted into the corresponding insertion hole and is in sliding connection with the corresponding conical ring piece, and the other end of each insertion rod is fixedly connected with the other conical ring piece; the big end of the conical anchor rod is upwards sleeved with the movable conical ring, and the diameter of the upper bottom face of the conical anchor rod is larger than the maximum diameter of the movable conical ring. The conical anchor rods are connected to the