Mustard can be eaten in early pregnancy. Mustard is rich in iron, calcium, magnesium and vitamins, which is especially suitable for pregnant women. Iron can prevent iron deficiency anemia in pregnant women, and calcium can relieve calcium deficiency in pregnant women and also promote fetal bone development. Magnesium can protect pregnant women’s cardiovascular and cerebrovascular to avoid heart problems. Vitamins can supplement the body needs of pregnant women and also relieve constipation during pregnancy. The seeds of mustard can help relieve pregnancy vomiting and food accumulation. Therefore, mustard is a kind of nutritious food, especially for pregnant women, but also pay attention to the appropriate amount.