The invention belongs to the field of cosmetics and relates to serum capable of reducing skin wrinkles and improving complexion; the serum is produced from saffron extract, thunberg fritillary bulb extract, sodium hyaluronate, fish collagen, yeast extract, butanediol, glycerol, cyclopentasiloxane, cyclohexasiloxane, maltooligosyl glucoside, squalane, polydimethylsiloxane, hydrogenated polydecene, trideceth, Euglena polysaccharide, dimethiconol, olive oil, lecithin, xanthan gum, ubiquinone, citric acid, sodium dehydroacetate, lactic acid, lactose, arginine, polyacrylic acid, EDTA (ethylenediaminetetraacetic acid) disodium, propylene glycol, and deionized water. Since the materials are extracted specifically and combined reasonably, the serum can reduce skin wrinkles and increase skin moisture; in addition, the serum also overcome the defects that oral administration of traditional Chinese medicine for beautification takes tedious steps, the traditional Chinese medicine for beautification has limited consumers, and the absorption effect is poor; the serum is natural, safer, simpler to use and more significant in effect.