The excreta disposal apparatus customized to a human body according to the present invention comprises: a body comprising 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, and a main body unit, which is connected to the seating unit so as to be mounted between the legs of the human body and has a receiving space therein； and a discharge channel, which is provided in the receiving space and communicates with the disposal space so as to discharge the excreta in the disposal space to the outside.
