If bleeding occurs during the eleventh week of pregnancy, it is more likely to be due to a miscarriage, but cervical and vaginal lesions cannot be excluded. In order to make a clear diagnosis, it is recommended to go to the hospital in time, first of all, do a gynecological examination to find out the source of the bleeding, if cervical and vaginal lesions are ruled out, and the bleeding originates from the uterine cavity, it is recommended to do an ultrasound examination to find out the embryo’s condition in the uterus, and whether there is a fetal heart. If there is a fetal heart, the diagnosis of preeclampsia is confirmed, and it is recommended to give timely treatment to protect the fetus, usually with natural progesterone to protect the fetus, commonly used natural progesterone capsules, progesterone injection, dydrogesterone tablets and so on. During the period of fertility preservation, it is necessary to pay attention to rest, avoid exertion, do not eat spicy stimulation, cold food, prohibit sexual intercourse, and at the same time to closely monitor the embryo in the uterus and the progesterone value of the changes.