A preparation method for silver carp bait, which is composed of Cyperus cyperus powder, honeysuckle powder, bellflower powder, eucommia grass powder, cockscomb stem and leaf powder, seaweed powder, safflower powder, corn silk powder, soybean cake powder, sorghum powder, red Peony powder, pineapple powder, melon powder, duck intestine powder, chicken blood powder, hawthorn powder, mandala pollen, loach powder, the percentages are percentages by weight; after entering the water, the sour fragrance is very strong, and the diffusion range is rapidly expanded, which can Strongly stimulate the taste buds of silver carp around, so that silver carp can smell the sour smell of bait from a long distance, and can see that the bait in the water body is slowly expanding, and the shape of the expanded bait is very good, which is more conducive to silver carp Ingestion of fish.