A 25-day-old baby should drink formula rather than milk, and can usually drink 60 ml to 80 ml of formula at a time, but there may be some variation. In fact, there is no strict delineation of normal standards for how much formula a baby should drink every day, but in general, 25-day-old babies, still belonging to the newborn feeding, each time the amount of milk in the 60 ml ~ 80 ml or so. Due to individual differences, when feeding the baby, mainly on demand, if the baby is still underfed after feeding the baby in accordance with the general standard, the baby should be appropriate to increase the amount of feeding. During the period of formula feeding baby should pay attention to observe the baby’s stool, if there are milk petals in the stool, it is likely to be due to the baby’s indigestion, and should be adjusted in time.