Normal newborns up to 6 months old do not need extra water if breastfeeding is normal, and daily breastmilk is sufficient to replenish the baby’s daily water needs. If the newborn is exclusively breastfeeding, usually do not need to drink extra water. If the weather is hot, the number of newborns is reduced, spitting up, diarrhea and other phenomena of dehydration, newborns should be given appropriate water, feeding should choose sucking bottle or dropper, easy to feed. If the newborn is formula-fed or mixed-feeding newborns, attention should be paid to the newborn’s condition, you can give the child a small amount of water in the middle of two feedings. Breastfeeding is recommended for newborns. Human milk contains proteins, fatty acids, sugars, immune factors, etc. It is economical, convenient, and at the right temperature, which is good for young children and mothers’ postpartum recovery, and if breastmilk is lacking it can be mixed under the guidance of a doctor.