Overnight chicken soup can be drunk if it is properly preserved and not spoiled, but it is not recommended to drink it if there is a change in food properties such as off-flavors. Overnight chicken soup can be drunk if it is well preserved (e.g. refrigerated, sealed, etc.) and has no deterioration, odor, and other manifestations. Chicken soup contains certain proteins, fats, trace elements and other nutrients, a long time at room temperature, many nutrients can be oxidized, or even deterioration, resulting in the loss of nutrition in chicken soup. At the same time, placed in the room temperature air in the chicken soup overnight microbes are easy to multiply, after eating, may induce gastrointestinal inflammation. In your daily life, pay attention to choosing fresh and non-perishable food.