A small amount of milk powder eaten by the baby is solid and can be taken on the plane. The liquid on the plane is limited. If it is a domestic plane, except for a small amount of milk powder packed in plastic bags or small containers, the canned ones need to be checked, and the quantity can also be brought on the plane within the total weight limit. If the baby needs to eat milk powder, you can bring a bottle and a small amount of milk powder with you. When eating, it is enough to prepare now. The milk powder eaten on the road needs to be opened for inspection, and can be placed in the milk powder compartment for inspection.