There is still hope for fertility preservation with protrusion of the amniotic sac, but it is necessary to rule out contraindications such as infection and contractions before performing an emergency cervical cerclage. When the mid-pregnancy examination reveals dilatation of the uterine os, or even protrusion of the amniotic sac from the cervical os, it is necessary to hospitalize the patient in a timely manner and perform a vaginal secretion examination to rule out contraindications such as infection of the reproductive tract. For those with contractions, the first step is to suppress the contractions and then perform emergency cervical cerclage to prolong the gestational period. Before performing emergency cervical cerclage, it is also necessary to exclude labor and placental abruption, and after the operation, it is necessary to have absolute bed rest, elevate the bed position, inhibit the treatment of contractions, and give antibiotics such as cefuroxime sodium to prevent infections, and follow the instructions of the doctor to move the lower limbs appropriately in bed, in order to prevent the formation of venous thrombosis, and the cerclage can generally be removed in due course at about 37 weeks of gestation. Clinically, when the amniotic sac protrudes, you should go to the hospital in time, and cooperate with the doctor’s guidance and active treatment.