The invention relates to a nano-carrier loaded with a
rhodiola rosea extract. The nano-carrier comprises the following components according to the weight ratio: 0.5% to 3% of
rhodiola rosea extract, 20% to 30% of
solvent, 40% to 50% of emulsifier and 18% to 35% of lipid material; the lipid material is a
solid and liquid mixture of a liquid lipid material and a
solid lipid material, and the emulsifier comprises a water-in-oil emulsifier and an oil-in-water emulsifier. A preparation method of the nano-carrier with the
rhodiola rosea extract comprises the following steps: mixing the lipid material and the emulsifier as an
oil phase; adding the water-in-oil emulsifier into the
solvent as an internal aqueous phase; adding internal aqueous water into a
liquid state oil phase; uniformly mixing and solidifying after being cooled to
room temperature; adding the water-in-oil emulsifier, uniformly mixing to obtain a lipid
system, solidifying after being cooled to
room temperature to obtain the nano-carrier loaded with the
rhodiola rosea extract. The invention has the following advantages: the nano-carrier loaded with the
rhodiola rosea extract is jointly utilized with a technology of multiple
emulsion and lipid nanoparticles, the traditional
liquid state oil is replaced by the mixture of the
solid state oil and the
liquid state oil, the internal aqueous phase as the
rhodiola rosea extract is more stable than the traditional multiple
emulsion, and the obtained nano-carrier loaded with the rhodiola rosea extract as a material can be added into the
cosmetics and foods, so that the existing application defects are effectively solved.