To provide an excretion disposal diaper provided with an automatic washing device which makes it possible to dispose excrement of a care-receiver without help from the care-receiver.

For the excretion disposal diaper, a stool water discharge tank 7, a warm water washing tank 5 and a bubble water tank 8 to be used around the pubic region and the anal region and around a stool and urine discharge port are provided on the hip back surface side. Also, a warm air device 10 for drying a crotch moist part and a compressor 11 for compressing air in the stool water discharge tank and the warm water tank further are provided, and the entire devices are integrally formed inside the diaper.