It also can be processed without discomfort excrement [challenge] in need of nursing care, and reduce the burden on caregivers, yet that noise also provide a small unit in a small. The injected into the diaper cup body 10 in the washing water sent from the water pump 39 SOLUTION: A water supply unit 25, were washed and excreta urinary, suction in the work style of the suction motor 31 to waste, excreta In waste processing apparatus for purification processes only work style by separating housing the washing water, and to circulate it back in the suction circulation pipe 50 to the diaper cup body 10, equipment storage suction circulation pipe 50 from the discharge side of the suction motor 31 After deriving the cooling unit 55 is provided outside of the box 12, and cooled by exchanging heat with the outside air 55 within the cooling unit to the suction circulation pipe 50, and then returned to the return box unit 27. [Selection] Figure Figure 1【課題】要介護者の排泄物を不快感なく処理でき、また、介護者の負担を軽減し、しかも小型で騒音も小さな装置を提供すること。【解決手段】給水ユニット25の送水ポンプ39から送られた洗浄水をおむつカップ本体10内に噴射し、泌尿器と排泄物を洗浄し、汚物を吸引モータ31の仕事風にて吸引し、排泄物と洗浄水を分離収納して仕事風のみを浄化処理し、おむつカップ本体10へ吸引循環管50で戻して循環する排泄物処理装置において、吸引モータ31の吐出側から吸引循環管50を機器収納ボックス12の外部に設けた冷却ユニット55に導出し、この吸引循環管50を冷却ユニット55内で外気と熱交換して冷却した後、前記リターンボックスユニット27に戻すようにした。【選択図】図1