The laceration of prepuce is mostly caused by excessive or improper exertion of men in sexual life. Rupture of prepuce frenum usually occurs in people with long prepuce. After the prepuce frenulum is broken, it may not affect some people by emergency suture or natural healing, but some people will not heal well, making the frenulum scar or prepuce frenulum too short, which may cause bending or pain after penis erection in the future. Such people need to go to urology for plastic surgery with lacerations. After the foreskin laceration, you should seek medical attention in time to determine whether the laceration needs suture treatment and give anti-inflammatory drugs to avoid infection caused by foreskin laceration and other diseases. In order to prevent the wound from cracking again, sexual intercourse is forbidden for one week.