A defecation detection apparatus including: a feces/urine receiving member that is placed to face the body of a wearer and that receives discharged feces and urine a urine suction device that is detachably attached to the feces/urine receiving member and that can sucks urine discharged in the feces/urine receiving member a temperature sensor that is placed at a defecation position where discharged feces are received in the feces/urine receiving member and a control section that detects the presence of discharged feces based on a signal remaining after removing a signal that is output from the temperature sensor within a predetermined time after an operation of the urine suction device from a signal that is output from the temperature sensor.
