I believe most male compatriots are no stranger to the foreskin, but do you really know what it is? The foreskin is the layer of skin located at the front of the penis that wraps around the head of the penis, the glans. The foreskin itself has a protective effect on the body, especially for boys before puberty, as it can wrap around the glans and protect it from accidental injury during sports. What is circumcision again? The foreskin of a child wraps the entire head of the penis, and as he grows older, the foreskin gradually retreats to the coronal sulcus of the penis, if the head of the penis is still completely wrapped, it is called prepuce. If the foreskin is too long, if the foreskin mouth is narrow and cannot be flipped behind the head of the penis, it is called prepuce. If the foreskin is not frequently turned over and cleaned, the possible hazards include: premature ejaculation; non-ejaculation; affecting the development of the glans; leading to penile inflammation; if the narrowing of the urethral opening affects urination will also damage the kidney function; due to the inflammation of the foreskin glans affects the health of sexual partners; in addition, there may be redness and swelling of the foreskin, pain and even induce penile cancer. So are all circumcised people in need of surgery? The answer is no. It is generally believed that the indications for circumcision surgery are: long foreskin with small foreskin opening; accumulation of foreskin scale in the foreskin sac or coronal groove, or often accompanied by inflammatory infection; congenital prepuce with recurrent infection. Clinically, it is common to see patients who complain of short sex time and circumcision and request circumcision. For this kind of patients circumcision surgery is effective or not? The long foreskin covers the glans and coronal groove for a long time, making it less stimulated and particularly sensitive, which makes it easy to form premature ejaculation. When circumcision is performed, the patient’s glans is just exposed and may appear to be more sensitive during sex and have a shorter sex life. With the glans and coronal sulcus exposed for a long time, stimulated by the friction of clothes, erection, fading and erection occur repeatedly, thus making it less sensitive and gradually prolonging the sexual life and playing the effect of treating premature ejaculation. However, due to the complex causes of premature ejaculation, this effect varies from person to person, and not every patient who undergoes circumcision can have a longer sex life. Due to the lack of relevant clinical data, the specific efficiency rate is not known. Therefore, for patients with premature ejaculation combined with glansitis of the foreskin caused by prepuce, circumcision can be considered. However, due to the complex causes of premature ejaculation, circumcision can be used as a means of treating premature ejaculation, but the effectiveness varies from patient to patient.