PURPOSE: To provide the excrement treating device which can quicken recovery of a function for getting up and walking, and also, can wash entirely the crotch part even if a seated position is deviated to some extent, and moreover, an outbreak of urethritis and cystisis, etc., can be prevented more effectively.

CONSTITUTION: This excrement treating device 1 is constituted of a storage part 3 provided in a lavatory seat 2 used by sitting down thereon, a filth suction port 3 for communicating with the storage part 3, a first washing water injection nozzle 5 which is provided in the upper part of the storage part 3 and injects washing water to the anus part, and a second washing water injection nozzle 6 which is provided in the upper part of the storage part 3 and injects washing water to the feminine urethral port.