A gestational sac 1.0 cm from the lower uterine scar is not recommended for continuation of pregnancy, and a distance of at least 2.0 cm is usually considered clinically safe. Vaginal ultrasound is preferred for second pregnancies after cesarean section in order to measure the distance of the gestational sac from the lower uterine scar, and a distance of 2.0 cm or more is usually considered safe, with a low risk of future development of keloidal pregnancies, placenta praevia, and placenta implantation. Therefore, a gestational sac 1.0 cm from the lower uterine scar is not recommended for continuation of pregnancy. For women who have a history of cesarean section and are pregnant again, they should be alert to the possibility of keloidal pregnancy, and the first ultrasound should be performed with a vaginal ultrasound, and once the gestational sac is found to be less than 2.0cm away from the uterine scar, the obstetrician should be consulted promptly for guidance on the next step of treatment. Pregnant women should pay attention to the prenatal examination during pregnancy, actively listen to the advice of professional doctors to do a comprehensive nursing care, pay attention to more rest, at the same time, should relax, avoid tension, anxiety, any discomfort should be timely to the hospital, by the doctor to clarify the diagnosis, and cooperate with the doctor to deal with the symptoms.