The low position of the gestational sac may be related to the location of the fertilized egg, as the location of the fertilized egg is rather random and may well lead to a low gestational sac. It may also be that the pregnant woman’s uterus gradually enlarges during her first pregnancy, but the gestational sac does not follow the uterus for extension, so it will cause the phenomenon of low position of the gestational sac. It is recommended that the patient should go to the hospital for examination and treatment in time, otherwise it is likely to cause complications, or cause miscarriage and other hazards. If the embryo is not well developed and the pregnant woman is weak, it may cause the low position of the gestational sac, which can be adjusted in the early stage by means of birth control. In principle, pregnant women with a low gestational sac must pay attention to rest and be less active.