To provide an erecting-up retention device urging a penis which lost or reduced erectile ability to erect in a short time to turn it insertable and to keep it erectile for a long time without impairing sex feeling.

A pair of holding pieces 3 having gripping portions 1 and semicircular portions 2 are openably and closably closed between the gripping portions and the semicircular portions with a common shaft 4 to form an annular portion in which both the semicircular portions cooperatingly elastically hold a male sex organ, the penis is held by the annular portion, and the penis is lightly stimulated, thereby the sex feeling sleeping with foreign substance feeling is awaken.