Lower body pain and pain during coitus may be related to vulvar laceration, or it may be caused by endometriosis, gynecological inflammation and other reasons. 1. Vulvovaginal laceration: usually caused by trauma, improper handling during labor and delivery, etc. Lower body pain can be caused by laceration of the vulva, especially during coitus. 2. Endometriosis: Because the endometrium is detached from its original growth position, it is likely to cause pelvic adhesions, which will cause pain in the lower body, especially during coitus, the pain symptoms are obviously aggravated. 3. Gynecological inflammation: commonly found in vaginitis, pelvic inflammatory disease, cervicitis and other diseases, by the stimulation of inflammation, will cause lower body pain, especially during intercourse will often aggravate the pain symptoms. Lower body pain, coitus also pain, may also be caused by other reasons, it is recommended to go to the regular hospital as soon as possible, after a clear diagnosis of the cause, give targeted treatment and conditioning.