The management of natural pigments in the world is not very strict. In the use of pigments, as long as three principles are remembered, they can be unimpeded. These three principles are: (1) selecting internationally recognized natural pigments; (2) Coloring the food that can be colored in various countries; (3) The amount of pigment added in food color matching should be lower than the control of the highest content. For example, beetroot extract is a natural pigment that is allowed to be used in Sweden, but it is only allowed to be used in special foods, such as candy, flour, cakes and edible icing, and its usage is also limited, and the dosage in edible icing should not exceed 20 mg/kg (calculated by beet red).