The success rate of preserving the fetus by bleeding in early pregnancy is related to the amount of bleeding. If there is a small amount of bleeding and slight abdominal pain in early pregnancy, consider the phenomenon of miscarriage, which may be caused by low progesterone or overexertion. However, if the fetus is found to be developing normally through ultrasound examination, it is necessary to use progesterone under the guidance of the doctor for reasonable regulation, so that the success rate of fetus preservation can reach 90%. During the period of fetal preservation, bed rest is recommended, no strenuous exercise, and more lean meat, fish, shrimp and other food to supplement protein, which can promote fetal development. If there is a lot of bleeding and the fetus shows abnormal development through ultrasound, the chance of successful birth control is very low. There are many reasons for miscarriage, so it is best to go to the hospital for examination, and after identifying the cause, use reasonable medication under the guidance of the doctor to regulate the pregnancy to avoid another miscarriage, and need to strengthen the diet and nutrition during the preparation period, and reasonably supplement folic acid.