To rapidly transmit an excretion treatment to a caring person by not only performing distinction among feces, urine, and fart but also performing the determination of diarrhea, soft feces, and hard feces concerning feces and the detection of even a urine leakage and feces leakage.

An odor sensor capable of detecting ammonia, hydrogen sulfide, and amines and a humidity sensor are arranged under a sheet close to a portion between both thighs in a space enclosed by the bedding of a cared person. A suction fan forcibly circulates air through the sheet. The kind of excretion and a leakage from a diaper are determined based on information on the change amount and duration of the intensity detected by the odor sensor and the change amount and duration of humidity in the humidity sensor. Then, the emergency level of an excretion treatment is reported to a caring person.