Generally referred to as the men’s retractor ring is the circumcision retractor ring, the circumcision retractor ring has a temporary relief effect for patients with simple and non-infected phimosis. The use of the wide edge of the ring to prevent the long foreskin recovery cover the glans, can temporarily play a role in alleviating the role of the long foreskin, but can not be a fundamental solution to the problem of the long foreskin and phimosis, mainly for long-term bed-ridden older people, infants and young children with long foreskin resistant to surgery. The circumcision blocking ring cannot be worn for a long time. If it is worn for a long time, it will have obvious foreign body sensation, which may lead to local edema and ischemia in serious cases, and even local incarceration and penile ischemic necrosis. It can be worn moderately for about 1 to 2 months as prescribed by the doctor, and if it is more than 2 months, it is recommended to choose the appropriate treatment, such as circumcision, according to the degree of phimosis. However, clinically the following patients should not be used: 1. Circumcision: it should be treated first. If applying circumcision blocking ring at this time, it will instead produce a certain compression effect on the foreskin, which will lead to inflammation that is not easy to get better or aggravated. 2. circumcision, circumcision mouth is too narrow: such patients are difficult to upturn the foreskin, this time on the ring is easy to cause the foreskin inlaid, the foreskin can not be restored to its original position, but instead of causing the foreskin to congestion, swelling, and even the penis, the glans black, purple, etc., should be the glans, the foreskin for manipulation of the reset, if the manipulation can not be reset, it should be cut to make the foreskin turned back to its original position again. The long foreskin, foreskin should be early medical treatment, according to the actual situation to choose the appropriate treatment, prohibit the unauthorized use of retractable ring, so as not to cause adverse consequences.