After pregnancy, as the fetus develops in the uterus, the abdomen of pregnant women will grow accordingly, such as excessive abdominal growth and personal circumstances. After pregnancy, women will eat a lot of supplements and nutritious food, and the rapid weight gain will cause excessive abdominal growth. If the pregnancy is accompanied by abdominal tumors, the abdominal circumference will be larger than normal pregnancy, such as ovarian tumors, which will compress the uterus when they are large, and both the pregnant woman and the fetus will be in danger. Excessive amniotic fluid can also result in rapid abdominal growth, which can cause breathing difficulties, edema and pressure in the pubic area, and can lead to premature labor. Abnormal growth of abdominal circumference can occur in huge babies, gravida, and multiple births. Therefore, a pelvic ultrasound examination should be performed in time to exclude relevant diseases to avoid danger to the pregnant woman and the fetus. At the same time, attention should be paid to regulating the diet during pregnancy, pregnant women should not overeat, maintain a reasonable weight gain, and actively prevent gestational diabetes.