PURPOSE: To make it possible to allow even aged people or children to come in and out with safety.

CONSTITUTION: In terms of a bath room unit provided with a waterproof pan 2 and a door frame 3 loaded on a rising piece 1 of the waterproof pan 2 and a door 5 whose one end is supported rotatively on the door frame 3 and which is closed and opened inside a bath room 4, a top 7 is formed substantially in plane shape. A suspension piece 9, which comes in contact with the side part 8 inside a bath room 4 of a lower frame 6 when a door 5 is closed, is installed. This construction makes it possible to virtually equalize a standing height with that of the rising piece 1 of the waterproof pan 2. It is also possible to clog a clearance between the lower end of the door 5 and the top 7 of the lower frame 3 of the lower frame 6 with the suspension place 9 from the inside of the bathroom 4.