Fluid in the uterine cavity and poor endotransmission in early pregnancy is a description on the ultrasound report card that is actually a subchorionic hematoma. Subchorionic hematomas are most often considered to be due to rupture and bleeding of the meconium vessels at the maternal-fetal interface that occurs during the normal proliferation of the uterine meconium after pregnancy, and are a risk factor for spontaneous abortion. However, there is a lack of conclusive evidence as to whether the size of the hematoma is positively correlated with the risk of miscarriage. Subchorionic hematomas are not bleeding from the embryo itself and usually do not cause harm to embryonic development. If the ultrasound only indicates fluid in the uterine cavity and there is no vaginal bleeding, it can be observed for a while, and some of the fluid will be absorbed naturally, and the ultrasound will be repeated in 1-2 weeks to find out the fluid situation. Early in pregnancy, pay attention to rest more, at the same time, should relax and avoid tension and anxiety. If there is slight bleeding, which is not relieved by proper rest and shows a tendency of persistent aggravation, and is accompanied by abdominal pain, you should consult a doctor as early as possible, and after a clear diagnosis of the causative factors, treat and regulate the symptoms under the guidance of the doctor.