1. Definition of formula milk powder for pregnant women. Formula milk powder for pregnant women is a nutritional supplement specially developed for pregnant women. Its ingredients and proportions are scientifically formulated to meet the nutritional needs during pregnancy and help promote the healthy development of the fetus. 2. The efficacy of formula milk powder for pregnant women. Formula milk powder for pregnant women is rich in protein, vitamins, minerals and other nutrients, which can improve the nutritional level during pregnancy and increase the growth rate of pregnancy.