The invention discloses an emulsion, a preparation method thereof and relates to a technology for researching the emulsion capable of resisting skin wrinkles and delaying skin aging by utilizing the effective components of a plant extract aiming at the defects of the traditional emulsion. The scheme is as follows: the emulsion mainly comprises a tea extractive, a mulberry bark extractive, an alga extractive, an acanthopanax root extractive, a papaya extractive, a rose extractive, water, hexadecanoic acid ethylhexyl ester, glycerol, isononyl isononanoate, octanoic acid/capric acid triglyceride, shea butter, dimethyl polysiloxane, cetostearyl alcohol, 1,2-pentanediol, methyl glucose sesquistearate, PEG-20 methyl glucose sesquistearate, glyceryl stearate, carbopol, arginine, xanthan gum, 1,2-hexanediol, octanediol and sodium hyaluronate. According to the emulsion, the effective components penetrate into the bottom of a cell, so that the synthesis of collagen is enhanced, the moisture degree and the tightening degree are increased, the skin wrinkles are fast and outstandingly decreased, the skin is restored with youth and resilience, the youth radiance is showed, and the problem of skin aging is prevented from being generated.