Natural honey is naturally mature honey. Its shelf life has no fixed time. If it is sealed for a long time and preserved properly, it can be preserved for a long time and will hardly deteriorate. It won't be a problem to store it for several years. However, if it is not completely sealed, it may deteriorate if it is left in wet or sunny conditions for 4-5 days. Honey needs to be stored away from light to avoid the decomposition of vitamins and other substances in honey at 15 to 20 degrees.

Concentrated honey is different from natural honey. If concentrated honey is added with some baking powder, it has a shelf life, so the shelf life of concentrated honey is generally two years or one and a half years.

For honey, there is no strict shelf life. The higher the purity, the longer the shelf life. This is because the higher the purity, the thicker the honey is, so it has a strong osmotic pressure. When bacteria enter honey, because the osmotic pressure difference is too large, the cell fluid will be broken and the bacteria will dehydrate and die. In addition, the high-purity honey has a pH value of 3.2-4.5, which belongs to a strong acid environment, and bacteria cannot survive in this environment, which is also an important reason why honey can be preserved for a long time.

However, the reason why the shelf life of honey is stipulated is because the purity of honey will decrease after processing. In addition, once the household honey is opened, it is difficult to keep it completely sealed. If honey comes into contact with air and moisture, it will undergo oxidation reaction. At this time, the sugar in honey will be decomposed to produce alcohol, carbon dioxide and water. Over time, honey will go bad.