A compound Forsythia suspensa-Radix bupleuri oil nanoemulsion preparation, having droplet size between 10 nm and 100 nm, and prepared from raw materials with the following percentages by weight: 12.00%-28.00% of a surfactant, 15.00%-30.00% of a co-surfactant, 3.00%-8.00% of oil, 0.10%-5.00% of Forsythia suspensa oil, 0.10%-5.00% of Radix bupleuri oil, 0.01%-0.05% of vitamin C, 0.01%-0.05% of vitamin B 1 and 20.00%-68.40% of distilled water, and the total percentages by weight of all the raw materials is 100%.
