The invention relates to a manufacturing method of a multifunctional leaf-spraying growth prompter. The manufacturing method comprises the following steps of: utilizing salicylic acid, alginic acid, EDTA (Ethylene Diamine Tetraacetic Acid)-Na, sodium nitrophenolate, chitosan, fulvic acid, sodium citrate, gibberellin, astragalus extract, Tween-80, FeSO4, borax , Na2Mo2O4, SDS (Sodium Dodecyl Benzene Sulfonate), urea, ZnSO4, LaSO4, CeSO4, KH2PO4, p-chlorophenoxyacetic acid, and the like, dissolving, complexing, drying, mixing and crushing to from a mixture, namely, the multifunctional leaf-spraying growth prompter. The multifunctional leaf-spraying growth prompter can quickly accelerate the growth of crops, make leaves become green, accelerate the growth of the leaves, enhance the photosynthesis, the stress resistance and disease resistance, increase the biomass and the yield and improve the quality.