Because of the surfactant blend, makes two liquid together that can not mix together originally， this phenomenon is called emulsification phenomenon. The liquid which have the function of emulsion called emulsifier. The principle is because of the character of hydrophilism and lipophilic, reduce the interface tension, change the state of the surface, mix the two liquid together which can not mix originally. The liquid which have the character of emulsion is AE emulsion which give perfume and turbity, use high HLB PGFE and quillaja saponin, which can advance the stability of the drink.