Clinically, there are many factors that cause vaginal bleeding during pregnancy, and different treatments are needed according to different factors: 1. If the vaginal bleeding is caused by factors such as pre-eclampsia, you need to take fetus-preserving drugs for treatment under the guidance of a doctor, such as fetus-preserving pills. If the bleeding is caused by low progesterone, progesterone can be injected intramuscularly or taken orally, and the patient should rest in bed and avoid getting out of bed. If vaginal bleeding occurs in the middle and late stages of pregnancy, it may be caused by placenta praevia, and different treatment methods should be adopted according to the specific gestational week and the maturity of the fetus.