Pregnant women can drink both plain milk and sour milk, and it is better to drink them alternately. Milk is rich in nutrients, pregnant women can insist on drinking milk during pregnancy, not only to ensure their own calcium needs, promote digestion and absorption, enhance appetite, but also to strengthen the bones of the fetus. The benefits of insisting on drinking milk are as follows: 1. The benefits of drinking pure milk: pure milk is rich in calcium, each liter of pure milk can provide 1200 mg of calcium, and the absorption rate of calcium in pure milk is extremely high, up to 40% or more, moderate drinking helps pregnant women and fetuses to replenish calcium. The benefits of drinking sour milk: sour milk is fermented from pure milk, which breaks down the proteins and lactose in pure milk, making it easier for the body to digest and absorb, and helps promote gastric juice secretion, while improving appetite and enhancing digestion. The vitamin A and protein in sour milk have a cholesterol-lowering effect, which helps pregnant women prevent hyperlipidemia during pregnancy; 3. The benefits of drinking alternately: pregnant women can drink 250-500 ml of milk every day to meet their calcium needs during pregnancy. Sour milk is made by fermentation, and in addition to the nutritional value of plain milk, it also has the effect of inhibiting bacterial reproduction and reducing the production of toxins. It is best for pregnant women to drink plain milk and yogurt alternately.