Pregnant women who drink soy milk properly can supplement protein, calcium and other nutrients, which dietary fiber also has the effect of relieving constipation during pregnancy. In order to the normal growth and development of the fetus, pregnant women during pregnancy to a large number of supplemental protein and calcium, etc., and soymilk contains more protein and calcium, phosphorus, iron, zinc elements, etc., can supplement the pregnant woman’s own nutritional needs, while supplementing the nutritional needs of fetal growth and development. Soymilk also contains a certain amount of dietary fiber, which has the effect of laxative, thus to a certain extent can alleviate constipation during pregnancy. Although soybean milk has many benefits, but also need to be consumed in moderation during pregnancy, too much or a large number of easy to diarrhea and flatulence and other symptoms, pregnancy needs to be balanced nutrition.