Circumcision refers to the narrow opening of the foreskin or the adhesion of the foreskin to the head of the penis (i.e., glans), so that the foreskin cannot be turned up to expose the head of the penis; phimosis refers to the foreskin covering the entire head of the penis and the urethral opening, but can still be turned up. Circumcision and prepuce can cause problems such as circumcision, difficulty in urination, foreskin scale and encrustation of the prepuce. Treatment: 1, non-surgical treatment: ① often turn up the foreskin, clean the glans and foreskin, remove the foreskin scale. Note that the foreskin must be reset after cleaning to prevent foreskin imbrication. Infants and young children (within 3 to 4 years old) are physiologically circumcised and may not be treated without abnormal performance. 2.Surgical treatment: Circumcision. Surgery must be considered in the following cases: ① those who have difficulty in urination due to narrow foreskin opening; ② those who have recurrent circumcision, or even scarring narrowing of foreskin opening; ③ those whose glans cannot be revealed after the age of 4-5 years; ④ embedded prepuce: manual repositioning must be performed immediately (by professional physicians), and those who cannot be repositioned manually must be repositioned surgically. Circumcision is a common operation in pediatric urology. At present, there are two types of surgery in our department: the traditional suture method and the ligature method. The main difference: the traditional method takes longer to operate and requires sutures and postoperative stitch removal; the ligature method takes less time to operate, does not require sutures and does not require stitch removal, and the postoperative recovery time is usually 2 to 3 weeks. The doctor will choose the appropriate method according to the specific situation of the child. Depending on the degree of cooperation of the child, different types of anesthesia are used.