Usually drinking pure milk and yogurt in moderation during pregnancy is beneficial to the development of the fetus, but it should not be consumed in large quantities over a long period of time. During pregnancy, pregnant women need to ensure a balanced intake of nutrients to meet their own nutrition and fetal growth and development needs. In general, pregnant women can drink a moderate amount of milk, yogurt and other dairy products, which are rich in protein, vitamins, fat, a variety of trace elements, etc., can maintain the normal physiological functions of the mother, and the calcium element is good for fetal bone development. Although pure milk, yogurt and other dairy products are beneficial to the development of the fetus, pregnant women should be careful to avoid drinking large quantities over a long period of time to prevent aggravating the burden on the gastrointestinal tract. Pregnant women are advised to ensure a balanced intake of nutrients and avoid drinking spoiled or freshly taken out of the refrigerator dairy products. Attend medical checkups on time to monitor the growth and development of the fetus.