Sudden feeling of vaginal drop in the 28th week of pregnancy is often a normal physiological phenomenon, but can not be ruled out as a result of pelvic floor dysfunction, and need to consult a doctor for examination. Late pregnancy pregnant women have vaginal drop is mainly due to the growing uterus and has entered the pelvic cavity, this time the vagina will have obvious drop feeling, at the same time, the vulva, anus will also have obvious local drop feeling, walking will also feel the abdomen sinking, which is a normal physiological phenomenon. When pregnant women experience symptoms such as abdominal rigidity, regular uterine contractions, obvious abdominal distension or sudden urge to have a bowel movement, it is likely to be a sign of impending labor. Pelvic floor dysfunction can also lead to vaginal drop sensation, which includes pelvic organs, bladder, rectum, uterine prolapse and so on. In mild cases, the sensation occurs after prolonged standing or exercise. Severe prolapse can make the pelvic floor to the pelvic organs support and support the ability to weaken, thus causing the pelvic floor pelvic congestion, the symptoms of this time for the lumbosacral pain, vaginal drop sensation, standing for a long time or when the symptoms of fatigue will be aggravated, the symptoms can be alleviated after rest. If a pregnant woman has vaginal drooping sensation, she should seek medical examination without delay to avoid delaying her condition. Pay attention to rest on weekdays, quit smoking and drinking, and maintain a regular routine.