Pregnant women can eat alfalfa greens in small quantities with no effect on the fetus. However, it should not be consumed in excess. Alfalfa contains protein, carbohydrates, vitamins, carotenoids and a variety of minerals and other nutrients, pregnant women can eat in moderation to replenish the body’s required nutrients. Moreover, alfalfa also contains fiber, which can promote gastrointestinal peristalsis after intake and can relieve constipation during pregnancy. Alfalfa vegetables can be appropriate intake, but not excessive consumption, excessive consumption is easy to cause nutritional disorders in pregnant women, other nutrients in the body is too little, which in turn causes fetal growth and development is limited. Pregnant women’s diet needs to be nutritionally balanced, with a reasonable mix of meat and vegetables, to ensure that the nutritional intake at the same time can be appropriate exercise. In the course of pregnancy abnormalities need to consult a doctor in time.