Seeing red after having a fetal heartbeat is usually a miscarriage, and it is important to see how much red there is. If there is not much redness and the stomach does not hurt, this is a preterm miscarriage, which is important. This is important because if a miscarriage with premonitory signs is not treated in time, the condition may progress to incomplete miscarriage. In the case of incomplete miscarriage, the amount of redness is high and the patient has abdominal pain, and if the miscarriage is incomplete, the baby cannot be saved. So after the appearance of fetal heart red, must quickly bed rest, under the guidance of the doctor to take oral progesterone drugs, clinically commonly used is progesterone, to do to protect the fetus treatment, is conducive to the condition of no further development.