To provide a bath-room unit capable of assembling wall panels at right angles to each other alone.

A bath-room unit is constituted of two adjoining wall panels 3 at right angles to each other, a strut member 4 having a recessed cross section fitted to a bent side 3a of the wall panels 3 from the rear side and erected with a strut fixing member provided to a corner section of a waterproofing pan, a watertight member 5 inserted into the strut member from the front side of the wall panels 3 and a fixing screw for temporarily fixing two wall panels at right angles to each other by inserting them into the strut member 4. In that case, the wall panels 3 can be assembled by a worker alone.