The best time to supplement milk powder for pregnant women can be chosen according to their own situation. Generally, the physical development of the fetus is accelerated after the fourth month of pregnancy, and pregnant women with poor diets can supplement some of their nutrition through milk powder. During pregnancy, the growth and development of the pregnant woman and the fetus have an increased demand for nutrients, and formula for pregnant women can be used for pregnant women who cannot meet the demand for various nutrients through diet alone. Therefore, for pregnant women who have a balanced diet and a diverse diet structure, there is no need to supplement with maternal milk powder to avoid excessive weight gain and excessive fetal growth. For pregnant women who have a single diet and are picky eaters, they can consume maternal milk powder to ensure that the fetal development needs of various nutrients during pregnancy. Usually, pregnant women can start drinking maternal milk powder after pregnancy, without any specific strict time requirements. Pregnant women generally drink milk powder twice a day, once in the morning and once in the evening, and the best time to drink it is at night before going to bed. The fetal physical development is generally accelerated after the fourth month of pregnancy, during which the nutrients can be supplemented by pregnant women’s milk powder. However, the fetus is fully formed after 7-8 months, so there is no need for excessive intake of maternal milk powder. In addition, women need to pay attention to a balanced diet during pregnancy, avoid eating fried or high-fat foods, keep bowel movements smooth and ensure sufficient sleep.