The amount of fluid in the uterine cavity and the nature of the fluid in the uterine cavity are often analyzed clinically. 1. The amount of fluid in the uterine cavity: a small amount of fluid in the uterine cavity has little effect on the fetus. If the uterine cavity fluid is smaller than the gestational sac, as long as the fluid does not continue to increase in the later stages, the uterine cavity fluid will be gradually absorbed as the gestational week increases and will not affect the growth and development of the fetus. The actual amount of fluid in the uterine cavity is greater than the gestational sac, so there is a risk of miscarriage, which requires fetal preservation treatment. 2. Most women have different degrees of fluid in the uterine cavity, most of which are physiological and will generally disappear on their own. If all pregnancy tests do not indicate abnormalities and the pregnant woman does not have vaginal bleeding or abdominal pain, it will not affect the fetus; however, some women’s uterine effusion is caused by pathological inflammation, such as pelvic inflammatory disease, and if the pregnant woman has abdominal pain or vaginal bleeding, there is a possibility of pre-miscarriage and she needs to seek medical attention in time. Pregnant women with uterine effusion should seek medical attention and examination in time, rest in bed according to the doctor’s advice and have an ultrasound examination to check the fetal development in about 10 days. In daily life, pay attention to vulva cleanliness, prohibit sexual intercourse and avoid lifting heavy objects. If there is vaginal bleeding, you need to go to the hospital in time and apply fetal preservation medication under the guidance of a professional doctor. Pay attention to eating more easily digestible food and coarse fiber vegetables in daily life to prevent constipation and coughing, so as not to increase abdominal pressure and increase the risk of miscarriage.