An excreta disposal apparatus includes a body having a seating unit correspondingly shaped to the curved shape of the genital area and buttocks of a human body and also has a disposal space open toward the genital area and buttocks of the human body to receive excreta discharged from the human body. A main body unit, for mounting between the legs of the human body, is connected to the seating unit and has an accommodation space therein. A discharge channel, provided in the accommodation space, communicates with the disposal space to discharge the excreta in the disposal space to the outside. A spray unit is exposed to the disposal space to spray washing water, wherein the spray unit comprises a washing unit having a rotary nozzle rotatable about a central axis and having, in the circumference thereof, spray holes for spraying the washing water.
