Drinking soymilk has the effect of replenishing amniotic fluid, and it is recommended that pregnant women with low amniotic fluid drink it every day after meals. Pregnant women with low amniotic fluid will affect the growth and development of the fetus, and may even cause intrauterine ischemia and hypoxia, so pregnant women need to replenish water in time. Soymilk is rich in high quality protein, which can effectively replenish blood volume, thus promoting blood circulation in the uterus and placenta, and has the effect of increasing the amount of amniotic fluid. Because drinking soy milk on an empty stomach is likely to cause the protein in soy milk to be converted into heat, which can not be absorbed by the mother, so it is best for pregnant women with low amniotic fluid to drink soy milk after meals. In addition, soybean milk must be cooked when drinking soybean milk, so that uncooked soybean milk does not contain toxic substances leading to poisoning of pregnant women. In addition, pregnant women should not drink too much soy milk to prevent indigestion, bloating, diarrhea and other symptoms. In addition, pregnant women should pay attention to regular ultrasound to check the increase or decrease of amniotic fluid, and always pay attention to the growth and development of the fetus.