A large gestational sac without fetal heart with brown discharge is not necessarily a cessation of pregnancy, but also based on progesterone and blood HCG results. At the beginning of pregnancy, when menopause is about 35 days, ultrasonography can be used to see the gestational sac and clarify the intrauterine pregnancy. However, when the ultrasound suggests that the gestational sac is very large but there is no fetal heart, accompanied by brown discharge, may be due to poor embryonic development, but also need to be combined with progesterone and blood HCG (human chorionic gonadotropin) levels, if necessary, need to be actively preservation of pregnancy treatment. However, when the ultrasound examination suggests that the gestational sac is very large without fetal heart with brown discharge, and the progesterone result is ≤5ng/ml, and the blood HCG level is low, it suggests that the chances of fetal arrest are high, and it is necessary to comply with the doctor’s instructions for regular review, and terminate the pregnancy in time if necessary. Occasional one time fetal arrest does not need to be particularly nervous, can be under the guidance of the doctor after another 1-2 menstruation can again prepare for pregnancy. When the ultrasound examination indicates that the gestational sac is very large without fetal heart and there is brown discharge, it is necessary to find out the cause under the guidance of the doctor and actively deal with it.