When pelvic fluid is detected after pregnancy, it is mostly caused by physiological pelvic fluid, pelvic inflammatory disease, ectopic pregnancy, etc. Pregnant women need to go to the hospital in time to determine the cause and deal with the cause. Common causes and treatment 1. Physiological pelvic effusion: the effusion is small and the pregnant woman has no special symptoms, which belongs to physiological pelvic effusion. The pelvic cavity is the lowest among the abdominal cavity in women, and under normal circumstances there is a small amount of fluid in the pelvic cavity, which plays the role of lubricating the abdominal organs. During pregnancy, pelvic congestion leads to more exudates and pelvic fluid, which is a normal pregnancy physiological phenomenon and does not require special treatment, and may disappear on its own as pregnancy progresses; 2. pelvic inflammatory disease: If intrauterine pregnancy is clear, but pelvic fluid, abdominal pain is obvious, accompanied by fever, increased vaginal discharge and other symptoms, ultrasound suggests pelvic fluid, we can consider whether there is inflammation near the pelvis and need If there is pelvic fluid in pregnancy and the ultrasound result indicates that no pregnancy sac is seen in the uterine cavity, consider that it may be caused by ectopic pregnancy and need to go to a regular hospital to terminate the pregnancy. Pay attention to strengthening vaginal hygiene, keeping the vulva clean and changing underwear regularly. Drink more water and promote urination. Also, pay attention to a light diet and avoid spicy and stimulating foods.