Circumcision is not effective with a resist ring because the opening of the foreskin is so small that the foreskin cannot be turned over to the back of the coronal sulcus of the glans. The ring can only be used to turn the foreskin to the back of the glans, behind the coronal sulcus, and fix the ring to the skin of the penis, so that the foreskin can be prevented from continuing to fall back and the glans can be opened to the outside. For circumcision, in principle, the best way to suggest to people is circumcision. Because circumcision can lead to restricted development of the penis, it can also lead to recurrent episodes of foreskin glansitis and a large amount of secretions inside the circumcision, which can lead to an increased incidence of penile cancer.