Yili pure milk has two kinds: boxed milk and bagged milk. The shelf life of bagged Yili pure milk is 28 days, and the storage condition is in a cool and backlit place, while the shelf life of boxed Yili pure milk is 6 months under the sealed condition at room temperature. Under normal circumstances, pure milk can't be drunk after the shelf life, but milk won't go bad on the day of shelf life, so milk can still be drunk during the shelf life and won't go bad. However, Yili pure milk contains almost no nutritional value even if it has not deteriorated for ten days, so it is best not to drink it.

Yili pure milk may have completely deteriorated after three months overdue, and it is even more inedible, otherwise it will bring great harm to the body. If it is Yili pure milk for children, it is not recommended to give it to children even if the pure milk has reached the shelf life, because the milk after the shelf life will have bacteria more or less, which may not cause too much threat to adults, but it will have a great impact on children. Therefore, parents are advised to give their children Yili pure milk within the shelf life.