Under room temperature conditions, milk powder should not be drunk after 2 hours of soaking; if it has been partially consumed, it is recommended not to exceed 1 hour. Milk powder is rich in nutrients and is an important food for babies in the process of growth and development. Milk powder placed too long after brewing is prone to contact with various microorganisms in the air and breed and multiply, making the milk powder deteriorate. Therefore, it is recommended to consume the milk powder as soon as possible after brewing. If not finished, it is not recommended to leave it at room temperature for more than one hour; if it is put into the refrigerator for refrigeration or freezing, it is recommended to use a well-sealed storage container to avoid the growth of bacteria in the milk powder. If a baby drinks spoiled or bacteria-contaminated milk powder, symptoms such as diarrhea, abdominal pain and vomiting can occur. In addition, you should also pay attention to the regular cleaning and disinfection of bottles and teats when feeding; ensure that the feeding temperature is appropriate, not too hot or too cold, and grasp the amount of milk brewed each time, and try not to set aside before feeding.