Intrauterine blood accumulation during pregnancy may be caused by the shedding of the uterine lining due to the implantation of the pregnancy sac, resulting in a small amount of bleeding, which can be expelled naturally or absorbed on its own. If the intrauterine blood accumulation is caused by preeclampsia, induced abortion or fetal abruption, medication or surgery is needed to promote the discharge of the accumulated blood. 1. Natural expulsion or self-absorption: When the gestational sac lodges in the uterine lining, it causes the uterine lining to fall off, which can cause a small amount of bleeding. Some of the blood accumulated in the uterus during pregnancy can be expelled naturally, while some of it may be absorbed by the uterus itself, and the blood accumulation will disappear. 2. Medication: If the intrauterine blood accumulation is caused by preeclampsia, it is necessary to cooperate with professional gynecologists to carry out fertility preservation treatment in a timely manner, and common medications include dextroprogesterone tablets, vitamin E, progesterone capsules or injections, and so on. 3. Surgical treatment: If the intrauterine blood accumulation is caused by the retained miscarriage or abortion, you should cooperate with the doctor to carry out surgical treatment as soon as possible, such as purging surgery, with the promotion of uterine contraction drugs, etc., to promote the discharge of the blood accumulation. If intrauterine blood accumulation is found during pregnancy by ultrasound examination, it is recommended to cooperate with the doctor in time to improve the systematic examination, to clarify the cause of intrauterine blood accumulation, and to take the next step to avoid causing adverse consequences.