If the milk powder is filled up for more than two hours, it is not recommended to drink it again, in daily life to the small children brewed milk powder, it is best to drink it within one hour. The long time placed on the milk powder is easy to suffer from bacterial contamination, small children to consume the long time placed on the brewing of good milk powder, may cause digestive symptoms, the more common have abdominal pain, diarrhea, nausea, vomiting and other clinical manifestations. In addition, the milk powder is not always placed on the milk warmer, because a long time is more likely to accelerate the deterioration of milk powder, easy to nourish bacteria, small children are easy to cause diarrhea and other undesirable symptoms after consumption. If the milk powder brewing good little children did not eat a bite, it is recommended that a short period of time refrigerator to save, and so the next time a child to drink, with warm water or hot water heater, in daily life, it is recommended that it is best to directly pour out.