Sudden bleeding at 50 days with fetal heartbeat and fetal buds may be caused by factors such as preeclampsia and refractory abortion, which can be treated by general treatment, medication (e.g., progesterone), and surgical treatment. 1. Pre-eclampsia: the amount of bleeding is less than the amount of menstruation, the cervix is not open and the products of pregnancy are not discharged. It is necessary to take bed rest in time, prohibit sexual intercourse, and have regular rechecks; progesterone can be injected to treat the insufficient function of the corpus luteum. 2. Difficult abortion: the cervix is open, but the pregnancy products are not discharged, the amount of vaginal bleeding increases, and the abdominal pain is severe. To prevent bleeding and infection; can use the uterine contraction to promote the uterine contraction, facilitate the discharge of the products of pregnancy; if necessary, can be removed by scraping the uterine cavity residual products of pregnancy. There are many factors that lead to the sudden bleeding at 50 days with fetal heartbeat and buds, so you can go to the hospital in time to find out the cause of the disease and then carry out the relevant treatment.