It is not harmful for pregnant women to drink soymilk for a long time, but excessive drinking of soymilk by pregnant women for a long time may cause indigestion. Fresh soybean milk does not contain harmful substances to pregnant women and fetuses, drinking pregnant women’s health is not harmful, moderate consumption of soybean milk can be supplemental nutrition, soybean milk contains a variety of vitamins, high-quality protein, as well as iron, calcium and other minerals, these minerals can effectively prevent anemia during pregnancy, help fetal bone development. However, pregnant women should not drink too much soymilk. Excessive soymilk may cause indigestion, leading to constipation and so on. Nutrition during pregnancy should be balanced, on the basis of increasing protein, pay attention to eating fresh vegetables, fruits and other foods.