To restrict floating of a body due to the ground water level without providing a large cross section.

In this refuse pit 5 for a refuse treatment facility, the body 4 comprising side walls 2 and a bottom plate 3 is disposed underground, for storing refuse 10 charged from a refuse charging port 8 at an upper part. Under a position where the side walls 2 are installed, a continuous stopping wall 17 is provided to surround a range under the bottom plate 3. The continuous stopping wall 17 is driven into a water impermeable layer 18 at a lower end part, and the body 4 is placed and fixed to an upper end of it. The bottom plate 3 is formed thin to be directly placed on a ground surface in an earth floor structure. The side wall 2 is reinforced by overhanging an outward overhang part 2a at a lower end part to achieve a self-standing structure to side pressure.