The invention relates to a novel passive targeting 
nano emulsion with 
skin whitening effect and a preparation method thereof. The invention uses a novel passive targeting transdermal delivery dosing 
system TDDS-
nano emulsion as a carrier of a function component for whitening or lighting the 
skin, uses different physical and chemical properties, action mechanism and actual effect of each 
skin whitening function component, especially the action advantages of certain novel 
skin whitening function components, and provides 
skin whitening effect 
nano emulsion systems with two joint applications in 
morning and 
evening matched with each other. The two joint applied nano 
emulsion systems not only have minimum spherical grains, extremely even distribution of nano-scale grains, remarkable passive targeting function, good 
transdermal absorption and strong penetrability, but also have extremely even, exquisite, smooth and glossy texture of the nano 
emulsion, is quite comfortable after 
coating on the face or the skin, has no stimulus and good stability; and the nano is light yellow, beautiful in appearance, bright and transparent, clear and crystalline, has light 
opalescence, and is 
adhesive but not sticky, thick but not heavy, oily but not greasy.