It is not recommended to continue eating expired salted duck eggs. The shelf life of salted duck eggs depends on the storage conditions. If salted duck eggs are preserved at home, they can be preserved for about nine months, and stored in the refrigerator can be extended for three months. The vacuum-packed salted duck eggs bought in supermarkets can generally be stored for about three months, and the specific shelf life depends on the instructions.

Salted duck eggs can be stored in the refrigerator. After the salted duck eggs are wrapped with plastic wrap, they are placed in the refrigerated room, and the temperature is controlled, so that the storage time can be extended by one month. Cooked duck eggs can be kept in cold storage for about a week. Salted duck eggs are not easy to rot, but this kind of food should be preserved to prevent water loss in the eggs. Once salted duck eggs lose water, the yolk is easy to turn black.