After a woman becomes pregnant, in order to provide adequate nutrition for the baby in her belly, she must increase her nutrition appropriately. However, some people mistakenly believe that the more a woman eats and gains weight during pregnancy, the better. In fact, if a woman eats too much during pregnancy and the proportion of nutrients is improperly matched, it can easily lead to overnutrition and make her weight exceed the normal range, that is, she is overweight during pregnancy. Overweight pregnant women can cause many diseases, such as gestational hypertension, gestational diabetes and complications, etc.