PROBLEM TO BE SOLVED: To provide an excrement separation and recovery device and an independence support underwear with which a wearer or a caregiver can perform the treatment after urination and/or defecation easily and sanitarily.SOLUTION: An excrement separation and recovery device 1 is attached to the crotch part of a wearer and includes: a sheet-like water-absorbing sheet part 10 which is organized to be able to absorb the wearers urination a defecation recovery bag 2 which is formed in the rear face of the water-absorbing sheet part 10 so that the defecation of the wearer can be recovered and is made of a material enabling the disposal in a state of holding the defecation leakage prevention guards 16A and 16B formed along the outer periphery or both sides in the longer direction of the water-absorbing sheet part 10 and a defecation recovery bag housing part 11 which is attached to the rear face of the water-absorbing sheet part 10 and contains the defecation recovery bag 2.