Pre-eclampsia is often characterized by a small amount of vaginal bleeding in early pregnancy, but there is no discharge of pregnancy tissue, ultrasound indicates that the gestational sac in the uterine cavity continues to increase in size, and fetal buds and heart tube pulsations are seen. If there is no vaginal discharge of tissue-like material, fertility preservation treatment may be given. Progesterone and progesterone can be used to treat progesterone, and follow-up ultrasound and progesterone levels are needed during the treatment.