In the workplace, we often encounter this situation: many people find a small amount of pelvic fluid during a physical examination and become very worried. In fact, after puberty, there are follicles in the ovaries that mature periodically and ovulate. When the follicles rupture during ovulation, the follicular fluid is discharged with the eggs and a small amount of fluid accumulates in the pelvis. Some women experience mild abdominal pain during ovulation, which is related to this. Therefore, there is no need to worry too much. Of course, in some cases, there are blood vessels at the site of follicular rupture, which may lead to ruptured blood vessels and bleeding, resulting in an acute abdomen with more fluid in the pelvis, which is one of the more common acute abdominal conditions in obstetrics and gynecology: rupture of the corpus luteum. In addition, pelvic effusion can also occur in the presence of other organ pathologies such as heart, liver, kidney, or abdominal or pelvic inflammation or tumor. At this time, there are usually manifestations associated with related diseases. I have also come across girls who have lost excessive weight to the point of malnutrition and hypoproteinemia, which leads to menstrual disorders with pelvic effusion. So I hope that the girls who love beauty pay attention.