The invention belongs to the technical field of daily chemical industry, and discloses a shampoo-hair conditioner composition with a scalp anti-aging function and a preparation method thereof. The shampoo-hair conditioner composition consists of a shampoo and a hair conditioner, wherein the shampoo consists of cocamidopropyl betaine, a cocoyl glutamate TEA salt, glycerol, butanediol, a polyquaternary salt-10, hydrolyzed jojoba ester, ceteareth-60 myristyl glycol, glycol distearate, hydrolyzed collagen, a white willow extract, an essence and water; and the hair conditioner consists of polydimethylsiloxane, docosyl alcohol, hydroxyethyl cellulose, behentrimonium chloride, butanediol, glycerol, hydrolyzed jojoba ester, hydrolyzed collagen, oligopeptide-1, a white willow extract, an essence and water. The shampoo-hair conditioner composition disclosed by the invention has a good hair cleaning effect, can repair damaged hairs, and can ensure that the hairs are smooth, refreshing and convenient to comb; and meanwhile, the shampoo-hair conditioner composition can nurse the scalp, has a good scalp anti-aging effect, and is mild in formula.