A newborn baby does not need to drink water, except for eating or sleeping, there are two ways to eat, one is breastfeeding, the other is formula feeding. Breast milk is isotonic liquid, no additional water, modern formula is also breast milk formula, so either way feeding, which will contain 80% of the water, as long as regular feeding, for the newborn baby demand has been sufficient, no additional water. And because the newborn’s swallowing function is not yet sound, simply feeding the baby to drink plain water is also easy to choke, so the baby does not need to drink water before adding complementary foods at 6 months. If as clean mouth, you can drink a little less water after drinking milk.