To improve the sensitivity of a remote controller switch when a shower unit of a portable toilet set in the interior, etc. is operated with the remote controller switch.

Armrests 2G and 2G are attached to both side panels 2A and 2A of a body frame 2 of the portable toilet 1 with the shower unit 6. A control sensor 5A is disposed on one side of the simple toilet, and the control sensor 5A is operated with the remote controller switch 12. The bottom face 23G of the armrest 2G is inclined so that the inner side is higher at least at a position on the bottom face 23G above the control sensor 5A. As a result, the reflection signal light from the remote controller switch 12 is oriented to the control sensor 5A to improve the sensitivity.