With the development of modern medicine, medical information is becoming more and more developed, the majority of parents are more aware of their children’s reproductive health and have a certain understanding of the dangers of circumcision, and many parents take advantage of the holidays to arrange for their children to be circumcised in the hospital, so as not to interfere with their studies, but also to have sufficient time to rest and recover. For this reason, every year, a wave of “circumcision” is seen in the urology department of our hospital during the holidays. The increased awareness of reproductive health among parents is certainly a good thing for children. At the same time, we have learned that many parents still do not know much about the indications for circumcision and the timing of the procedure, which delays the best time for their children to have the procedure, and also affects the development of their children’s reproductive organs. Which children need to be circumcised? 1, after 3 years of age, the foreskin mouth narrow, foreskin can not be turned up and reveal the head of the penis, that is, more than 3 years old children with pediatric prepuce. (Every boy is born with prepuce, medically called “physiological prepuce”, is normal, before the age of 3, if there is no recurrent infection, may not be operated. With age, the penis body grows, and the penis erects at night, the head of the penis will be naturally exposed around the age of 3). 2, before the age of 3 years old children with prepuce, such as repeated infection (can be manifested as the foreskin mouth red, swollen, painful, itchy, the affected often scratching with their hands, or have frequent urination, painful urination), narrow and small foreskin mouth caused by urination difficulties, urination foreskin bulging blisters. The person with foreskin scale accumulation under the foreskin also needs surgery, (generally parents can see or can touch the foreskin under the soy size foreskin scale). 3, due to repeated inflammation of the penis head foreskin, making the foreskin mouth scar contracture, and the formation of the acquired prepuce children. 4, the foreskin is too long and foreskin mouth narrow, foreskin is not easy to turn up, or no erection can be free of strong turn up, erection can not turn up after the person. (Such patients are the most dangerous, if the penis erects after turning up the foreskin, the foreskin mouth is stuck at the coronal groove and cannot be turned back, it forms a foreskin impaction, resulting in extreme swelling of the foreskin and even ischemic necrosis of the foreskin and penis head, once the foreskin impaction occurs, go to the regular hospital urology department immediately to deal with it.) Circumcision is also recommended for adults with the following conditions: 1. The foreskin is too long and cannot be turned over and cleaned frequently, or in the case of frequent cleaning the inner plate of the foreskin and the head of the penis still have more foreskin scale, membranous material, and odor. Or the foreskin is red and swollen and cracked after sex. 2.Married men with prepuce and lover with cervicitis, celiac disease, vaginitis and other gynecological diseases for a long time or repeatedly recurring 3.Patients with benign tumor of foreskin. 4, circumcision and more acromegaly, laser excision of acromegaly after the trauma is too large, will cause extensive skin necrosis. 5, circumcision and premature ejaculation. 6, those who want to engage in special activities and cannot wash regularly, such as joining the army, adventure, etc. 7, there is a typical circumcision, currently there is no obvious discomfort, in order to prevent the above situation, feasible prophylactic circumcision.