The reason why the cervix still bleeds when it is closed is because the cervix is not completely solid; there is a cervical canal in the middle of the cervix, and blood can flow out of the uterine cavity through the cervical canal. Vaginal bleeding after pregnancy with a closed cervix can be seen in preeclampsia, complete miscarriage, and induced miscarriage, etc. The blood comes from the uterine cavity, and a gynecological examination shows that the cervix is closed. 1. Pre-eclampsia: it is often characterized by vaginal bleeding, closure of the cervical os, and viability of the pregnancy. After active treatment, the vaginal bleeding decreases and most of the pregnancies can continue. 2. Complete miscarriage: the pregnancy is completely discharged vaginally, the uterus is closed and there is little vaginal bleeding, usually no special treatment is needed. 3. Auditory abortion: the pregnancy is located in the uterine cavity, but the pregnancy has stopped, the uterine cavity is closed in the gynecological examination, with or without vaginal bleeding, need to carry out timely curettage. Pregnant women who experience vaginal bleeding from the uterine cavity need to consult a doctor in time, complete the fetal ultrasound examination, and follow the doctor’s instructions for treatment.