If there is a small amount of blood in the leucorrhea during pregnancy and it can be relieved on its own, it is considered to be caused by physiological factors, but if there is abdominal pain and blood all the time, it is necessary to consider whether it is caused by miscarriage, poor placental condition and other factors. I. Physiological factors: During the process of embryo implantation in early pregnancy, there will be a small amount of leucorrhea with blood, which basically lasts for several days and can be relieved after rest, which is a physiological phenomenon. Second, the pathological factors: 1, pregnancy diseases: such as pre-eclampsia, ectopic pregnancy, preterm labor, early pregnancy will appear in the leucorrhea with blood. Of course, first of all, except for ectopic pregnancy, you can do ultrasound. After excluding ectopic pregnancy, if it is considered as preterm miscarriage, it is recommended to give timely medication to preserve the fetus, such as oral progesterone capsules and didrogestrel tablets; if there is no fetal heart and fetal bud in the embryo in the uterus after ultrasound examination, it is considered that the embryo has stopped developing, and the pregnancy should be terminated under the guidance of physicians after diagnosis; in case of preterm labor, the mode of delivery should be decided under the guidance of physicians according to the fetal age and general condition of the fetus; 2. Placenta If ultrasound examination reveals placenta praevia or placenta abruptio, you should be hospitalized immediately and given fetal preservation treatment if the symptoms are mild, and decide whether to surgically terminate the pregnancy if the symptoms are severe; 3, cervical diseases: if you have leucorrhoea and contact bleeding, consider that it is related to cervical polyps, cervicitis and cervical cancer, and you will also have leucorrhoea with The phenomenon of blood, need to be treated under the guidance of doctors according to the symptoms and signs.