Newborns who drink formula milk need to drink water, and the time to drink water is usually between feedings, not on an empty stomach, as drinking water on an empty stomach can easily affect the amount of milk. Newborn babies drink about 10-20mL of water, with the growth of the day the amount of water also gradually increased, drink 4-6 times a day can be. If the weather is hot and the child has fever, vomiting or diarrhea, the amount of water drunk should be increased accordingly. Breastfed children do not need extra water, 80%-90% of the ingredients in breast milk are mainly water, so they only need to be exclusively breastfed.