To provide a bedding sand-containing floor material unit which is easy to handle and clean, prevents sand dust from scattering even in the case of strong wind, eliminates the occurrence of an outflow of sand even during a rainfall time, and can be utilize as fire-protection sand.

A plurality of bedding sand-containing floor material units each formed in a rectangular shape as viewed in a plane are arrayed and laid on the floors of indoor and outdoor parts of a building to make bedding sand-containing floor material. Thereby, a comfortableness like walking with bare feet on a sandy beach is obtained. Since each bedding sand-containing floor material unit is made by storing a sand-containing bag in a sand bag storage container, it is easy to handle and clean, prevents sand dust from scattering even in the case of strong wind, eliminates the occurrence of an outflow of sand even during a rainfall time. Moreover, the sand-containing bag can be taken out of the sand bag storage container to utilize it as fire-protection sand in the case of fire.