PURPOSE: To promote work efficiency by making variable a slope wire net inclination to the lower edge of a slope wire net and the front edge of a horizontal wire net through a hinge shaft, connecting the upper edge of the slope wire net and the rear edge of the horizontal wire net to both ends of a diagonal tie material.

CONSTITUTION: A retaining wall construction unit is connected to rings 20D and 20F of the lower edge of a slope wire net 16 and the front edge of a horizontal wire net 18 through a hinge shaft 22. Then, a slit of a ground reinforcing sheet material 32 passes through the rear edge ring 20R of the wire net 18, and a lower joint shaft 30 is inserted in the ring 20R to connect the sheet material 32. Then, A joint shaft 28 passes through a ring 20U of the wire net 16 and, at the same time, it is connected to a hinge section of an upper stage side unit to prevent landsliding between filling layers. After a diagonal tie material 24 is set to a required slope angle and is mounted, the inside ground is excavated from a slope, and the rear end of the sheet 32 is fixed with a tension pile 36. Earth and sand is spread in every stage of the construction unit 10 to fix. By the constitution, execution can be easily carried out at a free slope inclination, and rigidity can be secured with a reduced number of components.