The disadvantage of royal jelly is that it is not resistant to high temperature. When the temperature is high, its nutrients are easily destroyed and deteriorated by bacteria. The experiment shows that the freshness is obviously decreased when stored at room temperature for one day, and it will be invalid at about 65438 030℃. But it is very stable at low temperature, and can be stored for one year at -2℃ and several years at-18℃.