It is best not to keep the brewed milk at room temperature for more than 2 hours. If it is a hot season, storage is not recommended. For formula-fed babies, milk should be brewed on demand or in small quantities, and should not be left for a long time after brewing. If you can’t eat the milk powder immediately, you can put it in the milk warmer for a short time, preferably not more than 2 hours. More than two hours will lead to a large number of bacterial growth, bacteria contaminate the milk and multiply in it, the baby if eating, can occur intestinal infection, diarrhea, abdominal pain and other discomforts. In addition, the temperature of the milk warmer will not be very high, is very suitable for bacterial reproduction temperature. Therefore, the brewed milk powder can not be placed in the milk warmer for a long time, if the milk powder has been placed for a period of time after brewing, it is best not to give the baby to drink, in order to prevent spoilage. When brewing milk should be brewed on demand or a small number of times to brew, brewed and do not leave for a long time, to avoid spoilage caused by the baby intestinal infections.