A penis erection stabilizer wherein a through-hole is defined through a center portion of a stabilizer body having a cylindrical configuration so that the penis can be inserted through the through-hole, and a small diameter portion having a diameter less than that of the through-hole is formed at a front end of the through-hole. According to the present invention, advantages are conferred in that the penis erection stabilizer has a single body and a small diameter portion is formed at the front end of a through-hole so that the blood can be easily supplied to the penis and the discharge of the blood from the penis can be maximally retarded, thereby maintaining the erected state of the penis for a time sufficient for the completion of the sexual act.
