Late pregnancy is the period of time between 28 weeks of pregnancy and the time before delivery, during which the growth and development of the fetus as well as the eating habits of the pregnant woman may lead to a surge in weight during late pregnancy. Late pregnancy is the main period of rapid growth and development of the fetus, and the weight of the fetus will also increase rapidly during this period, which may lead to a surge in the weight of the pregnant woman. The metabolism of pregnant women in late pregnancy increases, blood volume increases, which can lead to a big increase in appetite, if you do not pay attention to the structure of the diet at this stage, excessive intake of large oil and fat food, may lead to weight gain. So in late pregnancy, pregnant women should pay attention to diet, with appropriate exercise, so as to prevent rapid weight gain.