To dispense with a large elevating device disposed at the back of the toilet stool body.

Both right and left sides of the toilet stool body 2 disposed to be freely elevated on an installation floor F are supported by one pair of right and left expansible legs 3, 3, and an elevation operating tool 4 is provided between the installation floor F and the toilet stool body 2. As another means, both right and left sides of the toilet stool body 2 disposed to freely elevate the toilet stool body 2 on the installation floor F are supported by one pair of right and left expansible legs 13, 13 having a jack 14. Thus, the conventional large elevating device is removed from the back side of the toilet stool body 2, and the back side of the toilet stool body 2 can be abutted to the toilet wall surface W or approached thereto, so that a toilet convenient for use can be obtained without reducing the space on this side of the toilet stool body 2, and the right and left legs, 3, 3 (13, 13) can be reduced in size so as to make the whole in a compact size.