An excreta disposal apparatus comprising: a body, the body comprising: a seating unit having a shape corresponding to a curved shape of genital area and buttocks of a human body and comprising an excrement disposal unit corresponding to the buttocks of the human body and having a disposal space open toward the buttocks of the human body so as to take excreta discharged from the human body; a main body unit connected to the seating unit so as to be mounted between legs of the human body and having an accommodation space therein; a discharge channel provided in the accommodation space and communicating with the disposal space so as to discharge the excreta in the disposal space to the outside, a gender-specific module detachably provided to the body, the gender specific module comprises a female module comprising a seat unit for being coupled to the main body unit, the seat unit having an urine disposal unit communicating with the excrement disposal unit and formed to correspond to a curved shape of the genital area of female and to be open toward the genital area of the human body, wherein the urine disposal unit of the detachable female module is connected to the excrement disposal unit without being partitioned, wherein the discharge channel in the accommodation space is communicating with the excrement disposal unit of the seating unit and the urine disposal unit of the female module to discharge the excrement and urine in the disposal space to the outside. a body, the body comprising: a seating unit having a shape corresponding to a curved shape of genital area and buttocks of a human body and comprising an excrement disposal unit corresponding to the buttocks of the human body and having a disposal space open toward the buttocks of the human body so as to take excreta discharged from the human body; a main body unit connected to the seating unit so as to be mounted between legs of the human body and having an accommodation space therein; a discharge channel provided in the accommodation space and communicating with the disposal space so as to discharge the excreta in the disposal space to the outside, a gender-specific module detachably provided to the body, the gender specific module comprises a female module comprising a seat unit for being coupled to the main body unit, the seat unit having an urine disposal unit communicating with the excrement disposal unit and formed to correspond to a curved shape of the genital area of female and to be open toward the genital area of the human body, a seating unit having a shape corresponding to a curved shape of genital area and buttocks of a human body and comprising an excrement disposal unit corresponding to the buttocks of the human body and having a disposal space open toward the buttocks of the human body so as to take excreta discharged from the human body; a main body unit connected to the seating unit so as to be mounted between legs of the human body and having an accommodation space therein; a discharge channel provided in the accommodation space and communicating with the disposal space so as to discharge the excreta in the disposal space to the outside, a gender-specific module detachably provided to the body, the gender specific module comprises a female module comprising a seat unit for being coupled to the main body unit, the seat unit having an urine disposal unit communicating with the excrement disposal unit and formed to correspond to a curved shape of the genital area of female and to be open toward the genital area of the human body, wherein the urine disposal unit of the detachable female module is connected to the excrement disposal unit without being partitioned, wherein the discharge channel in the accommodation space is communicating with the excrement disposal unit of the seating unit and the urine disposal unit of the female module to discharge the excrement and urine in the disposal space to the outside.