Pregnancy with blood has the following conditions: i. If it occurs in early pregnancy, most suspect preterm miscarriage, miscarriage or embryonic abortion. It is better to go to the hospital for gynecological ultrasound, blood HCG and progesterone examination, and if it is simple preterm miscarriage, give birth control treatment. Observe first, if embryonic abortion occurs, the pregnancy needs to be terminated as soon as possible to avoid intrauterine infection. Secondly, if vaginal bleeding occurs in the middle of pregnancy as well as in the late pregnancy, placenta praevia is mostly considered. It is necessary to take bed rest, regularly review ultrasound, observe the growth and development of the fetus in the uterine cavity, try to take bed rest, carry out hemostasis and anti-infection treatment, promote the growth and development of the fetus, and terminate the pregnancy as soon as possible after the fetus is mature.