Milk sold on the market nowadays is usually sterilized, so under normal circumstances, cold milk can be drunk, but people with poor gastrointestinal function should not drink, and should not drink too much. First of all, you need to know your own physical condition, whether you can consume cold food, such as cold water, cold drinks, cold food and so on. Cold milk is generally no side effects, because most of the dairy products are cold, rarely hot milk. And in the hot summer, a cup of cold milk, both nutritious and thirst quenching, can make people physically and mentally happy. If you have a bad stomach, it is not recommended to drink cold milk, or you can warm up the milk before drinking. In addition, for milk allergy symptoms can not be eaten. If eaten by mistake, must go to the hospital in time for treatment.