The pain in the small abdomen after the end of menstruation considers the following factors: i. When there is gynecological inflammation, due to the presence of inflammatory exudate in the pelvis, including inflammation in the adnexal area, it can cause pain in the small abdomen. When there is inflammation of the cervix, the cervix is congested and stimulates the abdomen, which can cause pain in the small abdomen. When there is vaginal inflammation, due to abnormal vaginal secretions and persistent increase in white blood cells, it will cause upstream infection and small abdominal pain. Fourth, if eating spicy and stimulating food, including raw and cold food, or gastrointestinal indigestion can cause small abdominal pain, go to the hospital first for gynecological ultrasound to exclude gynecological diseases.