The average weight gain during pregnancy is 25 pounds, and it is best to limit the weight gain of pregnant women to about 25 pounds. During pregnancy due to the uterus and its contents, breasts, increased blood volume, intertissue fluid and a small amount of maternal fat and protein storage, pregnant women will have weight gain, the general increase in about 25 pounds. In the early stages of pregnancy due to early pregnancy reaction and fetal weight gain is not much, the weight of pregnant women will not change much. After 12 weeks of pregnancy, pregnant women will have an increase in food intake, and the fetus is gradually growing, pregnant women’s weight growth will accelerate. If the weight gain is too fast, pay attention to whether there are abnormalities such as high blood pressure and high blood sugar. At the same time, it is necessary to control the diet, minimize the staple food, and appropriately increase the intake of vegetables and fruits. In addition, pregnant women should pay attention to regular obstetric examination in order to observe the condition of the fetus, if there is any abnormality need to consult a doctor in time.