A can of powdered milk is recommended to be consumed within 1 month, but this may vary slightly from brand to brand. It is generally recommended that a can of powdered milk be consumed within 1 month after it has been opened. Although it may vary slightly from brand to brand, most of the powdered milk is not recommended to be consumed for more than 1 month at the latest. Because the milk powder is not sealed after the can is opened, and there will be some contact with the outside world, so if the can is opened for too long, there is a possibility of moisture, resulting in the quality of the milk powder to be affected to a certain extent. Drinking milk powder need to pay attention to, milk powder lysine and fruit juice (containing fructose) in the high temperature conditions will form lactofructosyl lysine, is not conducive to the body, so it is best not to add fruit juice. Those who are allergic to dairy products should not consume milk powder.