The kind of yellow water flowing from fetal abortion is not specific and cannot suggest fetal abortion, and should be combined with other tests. Yellow water flowing from the lower body with or without local itching and pain in the lower abdomen, inflammatory infection of the pubic area is likely. The clinical method to confirm the diagnosis of fetal abortion is ultrasonography, which cannot be judged solely by vaginal discharge. If there is a cloudy yellow vaginal discharge, accompanied by cessation of early pregnancy response or disappearance of fetal movement, you should go to the hospital for ultrasound examination for fetal abortion in time. Most of the pregnant women have no obvious symptoms after fetal abortion, and need to be diagnosed clearly by hormonal examination combined with early pregnancy ultrasound test, which shows incomplete fetal bud or fetal shape in the gestational sac, no fetal heartbeat or shows withered gestational sac. There are many causes of fetal abortion, mainly related to the abnormalities of the embryo itself, and in a few cases, related to luteal insufficiency, hyperprolactinemia, abnormal thyroid function, and diabetes. Due to the change of hormone level in the body after pregnancy, coupled with the decrease of resistance, the phenomenon of yellow discharge is likely to occur at this time, and pregnant women need to pay attention to perineal cleanliness. If you have abnormal vaginal discharge and suspect vaginitis, it is recommended to take vaginal secretions for laboratory tests and, if necessary, to perform culture of vaginal secretions plus drug sensitivity test results, and to decide on a specific treatment plan according to the physician’s recommendations.