The most common reason for bleeding during early pregnancy is a sign of preterm miscarriage. If there is a small amount of vaginal bleeding during early pregnancy, bright red, dark red or bloody leucorrhea, accompanied by lower abdominal cramping and discomfort, the first consideration is pre-eclampsia. The main cause of preterm miscarriage is abnormal development of the embryo or low progesterone level. The most important thing is ultrasound monitoring to determine intrauterine pregnancy and exclude ectopic pregnancy. If it is determined to be a preterm miscarriage, it is recommended that fetal preservation treatment, which includes the following items: first, proper rest, relaxation, and try to maintain a calm mood. The second point is to take oral fetal preservation drugs, such as oral preparations of progesterone, for example, dydrogesterone, or intramuscular progesterone injection, together with some proprietary Chinese medicines for treatment. The third point is to have regular obstetrical and gynecological ultrasound examinations to make sure that the fetus is alive in the uterus before you can rest assured. Most of the symptoms will be relieved after the fetal preservation treatment.