Baby milk powder can be changed to drink, but it is not recommended to change milk powder frequently, may lead to indigestion, diarrhea and some other adverse reactions. If the baby is not adapted to the milk powder, or other reasons, parents can give the baby to replace the milk powder, the replacement of milk powder need to pay attention to the gradual way of transition, from the beginning of the two-thirds of the old milk powder, one-third of the new milk powder, to the final transition of the new milk powder, it will take about 3 days to 5 days of time. In addition, it should be noted that if the baby has a recent cold, cough, fever, diarrhea and other adverse symptoms, it is not recommended to change the milk powder at this stage, otherwise it will aggravate the current condition.