Intrauterine early pregnancy uterine cavity a small amount of fluid, if it is physiological uterine cavity fluid can be self-absorbed, but if it is a pathologic uterine cavity fluid (such as preeclampsia, infection, etc.) is more important. 1. Physiological uterine fluid: due to the combination of the fertilized egg and the endometrium, blood vessel rupture, resulting in a small amount of bleeding, usually does not affect the development of the embryo, can be self-absorbed, is a normal phenomenon. 2. Pathological uterine fluid: such as preeclampsia, infection and other factors, will lead to the appearance of uterine fluid. Pre-eclampsia will appear vaginal bleeding, abdominal pain and other symptoms, infections such as pelvic inflammatory disease, vaginitis, etc., the patient will appear abnormal secretions, abdominal pain, fever and other symptoms, at this time the need for timely treatment, so as not to affect the development of the embryo. If the patient has intrauterine early pregnancy with uterine fluid, at the same time have the above mentioned accompanying symptoms, is the need for special attention, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor, improve the relevant examination, symptomatic treatment, so as not to delay the treatment.