The success rate of small gestational sacs is not measured by the size of the gestational sac, but mainly based on the development of the gestational sac and the physical condition of the pregnant woman herself has a direct relationship. Small gestational sacs indicate that the embryo development period is short, but not small gestational sacs means that the development is not normal, as long as the gestational sacs are well developed, generally do not need to be preserved abortion treatment. 1. The development of the gestational sac: small gestational sac may be due to the short duration of pregnancy, if there is no vaginal bleeding, abdominal pain and other abnormal manifestations, there is no need for abortion. If there are symptoms of preeclampsia, the ultrasound suggests that the gestational sac is well-developed and the success rate of abortion preservation is high after taking abortion preservation medication. If the development of the gestational sac is abnormal, the success rate of abortion preservation is low. 2. Pregnant women’s physical condition: if the pregnant woman herself is in good health, high compliance, good drug treatment, the success rate of abortion preservation is higher, and vice versa is lower. If there is an adverse reaction to the small gestational sac, you need to go to the hospital in time for further examination and treatment.