A urine disposal device for use with a urine detecting device that provides for smooth urination without compressing the wearer's urethra so that urination may be surely detected and voided urine may be quickly discharged out of the urine disposal devices. The urine disposal device has a front-back direction and includes a urination area having a first surface portion and a second surface portion cooperating to cover the penis of a wearer from the front-back direction and an opening through which the penis is inserted. The urination area has a urine collecting container provided in the second surface portion and the second surface portion lies on the side of the wearer's body.