Prepuce refers to the narrow opening of the foreskin, and the foreskin cannot be turned up to reveal the head of the penis. When children are born, most of the adhesions between the inner plate of the foreskin (the tender foreskin inside) and the head of the penis are formed. Later, with urination, penile development and erection, the foreskin gradually retreats, the foreskin and the head of the penis slowly separate and the head of the penis is exposed. If the adhesion between the inner plate of the foreskin and the surface of the head of the penis is not separated it forms a foreskin penis head adhesion. If the foreskin is thick and the opening of the foreskin is small, the head of the penis cannot be ejected and congenital prepuce is formed. Acquired prepuce is often right from the repeated inflammation of the foreskin penis head, so that the foreskin mouth and the inner plate of the foreskin to form a scar resulting in foreskin contracture, inflammation caused by the treatment of prepuce is more trouble. The foreskin is too long means that the foreskin covers the urethral opening, but can be turned up to reveal the urethral opening and the head of the penis, but the head of the penis cannot be fully exposed even after erection. How does circumcision behave? The circumcision causes the opening of the foreskin to be very small, which can cause fine urination. Urine accumulates in the foreskin during urination causing the foreskin to expand and form a bag at the front of the penis, which disappears only after urination is over; this is due to the fact that urine cannot pass through the opening of the foreskin quickly and accumulates between the opening and the head of the penis. There is a secretion generated by the foreskin, if the foreskin penis head is adhered or circumcised, the secretion will accumulate under the foreskin to form foreskin scale, and when you look closely you will find irregular blocks under the foreskin. Foreskin scale can stimulate the head of the penis to cause itchy feeling, so children will scratch and touch the penis with their hands, and foreskin scale is a good raw material for bacterial growth, which can induce infection leading to circumcision, and in extreme cases, it may also cause cancer and stones. The time of surgery for circumcision? There is no scientific basis to prove that a particular point in time is the best time to have surgery for circumcision. However, surgery in adulthood is generally quite painful due to the sensitivity of the foreskin and the longer and more frequent erections of the penis. In some countries, due to religious beliefs, the surgery is performed by a priest within 8 days of birth, and the surgery is quick and bloodless because there is not an abundance of blood flow to the foreskin. Does circumcision affect the development of the penis? In terms of the physiological characteristics of penile development, generally circumcision does not affect penile development. Excessive obesity, occult penis, etc. can have some effect on penile development.