If the weight gain of pregnant women is more than 0.55kg per week, it means that they have consumed too much nutrition and need to control the weight gain strictly. Or through the fetal development monitoring, such as ultrasound to monitor the fetal growth, whether it exceeds the gestational week, if larger than the gestational week, it indicates over-nutrition; also by measuring the uterine height and abdominal circumference to measure the fetal development, so as to determine whether the pregnant woman has over-nutrition.