To provide an excrement disposing device which prevents moisture condensation from occurring in a deodorizing unit even after the circulation of air by a ventilation blower is stopped.

This excrement disposing device 30 is provided with an excrement tank 31, a ventilation blower 32, a deodorizing unit 33, and an opening/closing valve 35. In this case, the excrement tank 31 is connected with a diaper cup 20 which encloses the waist-buttock section of a user through an excrement suction hose 4. The ventilation blower 32 sucks in air in the excrement tank 31, and makes the excrement in the diaper cup 20 sucked into the excrement tank 31, and at the same time, feeds warm air into the diaper cup 20. The deodorizing unit 33 is provided in air suction paths 51, 54 and 55 between the excrement tank 31 and the ventilation blower 32, and deodorizes the air which is sucked into the ventilation blower 32 from the excrement tank 31. The opening/closing valve 35 is arranged between the excrement tank 31 and the deodorizing unit 33, and opens while the air sucking-in motion of the ventilation blower 32 is performed, and closes while the air sucking-in motion is stopped.

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