To improve the safety and economy of a filling construction method by erecting a number of cylindrical fences, arranging them in the form of a measure of plural rows × plural rows or in zigzag, restraining the outside of the fences by cement-based placing, and filling the inside by soil and sand.

A ground anchor or a lock bolt 1 is set to trench the foundation face of a retaining wall 2, and leveling concrete is placed to assemble column steel materials so as to be connected to a lock bolt material 1. Next, the adjacent column steel material is executed to be built up, reinforcing bars assembled at a jobsite are hung by a hanger steel material, and hooked at the prescribed position of the head part of an opposite channel steel material. Next, concrete is placed to complete the retaining wall 2, cylindrical fences 3 are assembled at prescribed intervals, and a consolidation material 4 such as cement is placed. Placing of the consolidation material 4 is repeated to be placed at planned height, and soil, sand 5 and the like are charged in the inside of the fence 3, which is filled therewith. After these upper parts are filled to create a subgrade, and the subgrade and paver 6 are executed. Thereby safety and economy can be improved.