With a baby boy in the family, parents may have an additional layer of concern: should the baby’s foreskin be cut or not, and when should it be cut? The foreskin has its beneficial effects for children, but if it is too long it is best to cut it off in childhood to avoid affecting the physical and mental health of the baby. Circumcision and long foreskin affect health! The foreskin is a double fold of the skin at the front of the male penis covering the glans and the external urethral opening, equivalent to a “hat” for the glans. The foreskin is a residual organ of human evolution and has a certain reason and role to play. The skin of the glans is not yet keratinized and is very delicate, just like the eyes, very vulnerable; especially because the surface of the glans is rich in nerve endings, contact with surrounding objects or friction will produce a strong feeling of irritation, so that infants feel uncomfortable, so that the foreskin is equivalent to the glans wear a layer of clothing, the glans play a protective role. If the protective effect of the foreskin is excessive, it will play a detrimental side effect. The foreskin and the head of the penis are attached, the foreskin mouth is narrow, the foreskin can not be turned down, the urethral opening and the head of the penis can not be exposed, in medical terms called prepuce. Although the foreskin can be turned down to reveal the glans, it remains in a baby state, covering the glans and the outer urethral opening, it is called prepuce. Both circumcision and phimosis have certain side effects on the human body, and can even be said to do more harm than good. Different surgeries are appropriate for different conditions. Both circumcision and phimosis must be treated, preferably in childhood. Depending on their severity, the parents’ attitude and the conditions they are in, the options are: episiotomy, circumcision and circumcision. For mild cases of prepuce, the foreskin can be enlarged without anesthesia while awake, and the foreskin can be turned down to separate the adhesions between the glans and the foreskin, exposing the glans to the coronal sulcus and removing the foreskin. After that, parents flip the foreskin by hand daily for cleaning. If the foreskin is not too long, the glans will gradually be exposed naturally as the penis grows after the enlargement of the foreskin opening, and the circumcision can be done later without circumcision. However, you need to be persistent and insist on turning up the foreskin every day to clean it, even if it is painful for the child, otherwise pathological adhesions will occur and secondary circumcision will occur, which will make it very difficult to do the surgery again and the results will be poor. Circumcision, for those who have severe narrowing of the outer foreskin or enlargement of the outer foreskin followed by recurrent narrowing, is performed under anesthesia and the outer foreskin is split longitudinally on the dorsal side to expose at least half of the glans. This operation is simple and suitable for emergency cases, such as severe foreskin infection and foreskin impaction, etc. The disadvantage is that the foreskin is less aesthetically pleasing after healing. Circumcision is the most commonly used and widely adopted method of treating prepuce and foreskin at home and abroad. Although the surgical procedures are slightly different, they all involve circumferential excision of the overgrown foreskin to completely expose the glans, eliminate the dead space between the foreskin and glans, and keep it clean “once and for all”.