Ultrasound examination during pregnancy, showing that there is fluid in the uterine cavity, suggesting the symptoms of preeclampsia, the fluid in the uterine cavity is the sludge in the uterine cavity, the first thing to do in this case is to carry out birth control treatment. But it depends on the specific time of pregnancy, if it is in the early stages of pregnancy, only fluid in the uterine cavity without vaginal bleeding, can be under the guidance of the doctor to apply birth control medication, in the period of birth control should pay attention to as much as possible bed rest, do not have sex, to avoid constipation, generally after 5-7 days of birth control treatment can be gradually improved. If there is vaginal bleeding or abdominal pain, we should go to the hospital to hospitalization for fertility preservation treatment, suggesting that the symptoms of miscarriage worsened. In early pregnancy, we must pay attention to more rest, avoid exertion and cold, go to the hospital regularly for maternity checkups, and pay attention to the supplementation of Silymarin to prevent neural tube deformities in the fetus.