There are many reasons for female lower body tears, mainly in the following cases: First, if it occurs after childbirth, the vaginal opening is torn because of the large fetus and difficult delivery during childbirth, some pregnant women need lateral incision and the doctor will stitch the wound. Secondly, if it occurs after intercourse, it is mostly due to the vaginal opening laceration caused by too rough and aggressive movements during intercourse, so you should seek medical treatment promptly and prohibit sex during the treatment period to avoid repeated wound opening and scar growth, which is not good for future couple life. Third, consider accidental injury, such as cycling, sports or excessive limb activity, or trauma that causes lower body laceration, need timely specialist consultation and treatment.