Not all bees are called "queen bees", and not all bees eat the same thing. Royal jelly, as a special food for queen bees, is the serous fluid secreted by the tongue gland and palate gland of young worker bees, and contains many nutrients such as protein, fat, vitamins, sugars and nucleic acids. Its unique edible value has always been praised by people.

Royal jelly oral liquid, the president of Tongrentang, is a health food approved by the US Food and Drug Administration, with scientific proportion, rich and pure taste and health care function of immunomodulation.