The most suitable age for circumcision needs to be decided on a case-by-case basis: first, in the usual sense, patients who are simply circumcised, i.e., there is no narrowing of the external foreskin, no prepuce, no abnormal penile development, and no chronic infection, are recommended to undergo surgery after the age of 12 years. At this time, the child has developed to a certain age, has a certain pain tolerance, relatively good cooperation with surgical anesthesia, and patients can use local anesthesia, no hospitalization, and relatively low cost. Second, for patients with prepuce, urine is fine when urinating, and there is a urinary bulge in front of the glans penis, then it is recommended to have surgery before school age, that is, around 6 weeks old. This can avoid chronic infections caused by prolonged circumcision, or the developmental disorders of the penis. Third, patients with combined circumcision and penile curvature deformity are recommended to undergo surgery before the age of 6 years, which requires hospitalization. 6 years of age does not affect the patient’s study, and at this time the child is younger and does not have psychological barriers. The surgery is recommended before the age of 6 years because it may lead to psychological disorders due to the ridicule of classmates after going to school.