A excreta disposal apparatus is customized to a human body and includes a body having a seating unit, which has a shape corresponding to the curved shape of the genital area and buttocks of the human body and also has a disposal space open toward the genital area and buttocks of the human body so as to take excreta discharged from the human body. A main body unit, which is connected to the seating unit, is mountable between the legs of the human body and has a receiving space therein. A discharge channel is provided in the receiving space and communicates with the disposal space to discharge the excreta in the disposal space to the outside.
