5-year-old prepuce includes physiological and pathological causes, such as local inflammation, trauma and so on. 1.Physiological prepuce: Due to the fusion of the inner plate of the foreskin and the head of the penis in the process of fetal development leads to the occurrence of the prepuce, after birth can be in the androgen, keratinization of epithelial cells, the continuous growth and development of the penis and other factors, the prepuce can gradually disappear, which is a normal physiological phenomenon, and generally do not need to be dealt with. 2. Pathological causes: (1) Local inflammation: it can be due to local bacterial infection and other reasons, resulting in the adhesion of the foreskin and glans, which leads to the problem of prepuce. If the adhesion is not serious, you can consider doing circumcision dilatation, local anesthetics in the drop into the circumcision mouth after the after-effects of the balloon for dilatation, the circumcision mouth will be expanded to expose the glans. If the adhesion is heavy, circumcision can be used for complete cure. (2) Trauma: Local trauma can lead to scar contracture and narrowing of the circumcision opening and thus the problem of phimosis. Surgical treatment such as circumcision is recommended for such patients. There are many other ways to treat patients with five-year-old circumcision, and it is recommended that such patients go to regular hospitals for consultation and active treatment.