There is no set time to start drinking water for newborns, and under normal circumstances, additional hydration is generally not recommended for newborns. There is no specific time for newborns to start drinking water. Under normal circumstances, breastfeeding is recommended for newborns because breast milk is more nutritionally complete and rich, and is easily absorbed and digested by newborns. Breastmilk usually contains enough water, so there is no need for additional hydration. If the newborn has a fever, diarrhea, etc., if necessary, you can drink water under the guidance of the doctor, but be careful not to drink too much water, a small amount of several times, so as not to burden the baby’s intestines and stomach. The temperature of water when drinking is usually around 38℃. Too high a temperature may scald the baby’s mouth, esophagus, etc. Too low a temperature may cause the baby to become cold and prone to diarrhea.