The invention relates to bait for fishing a silver carp and a bighead carp, which is prepared by apple powder, grape powder, hawthorn fruit powder, fermented bean curd powder, rice protein powder, sweet potato protein powder, plant protein powder, banana protein powder, lees powder, strawberry powder, musk powder, tulip scape powder, common jasminorange scape powder, fish wire-drawing powder, fish adhesive, fish hunger promoter, fish dispersing agent, fish feeding promoter, fish hormone stimulant and corn expanding agent. All powder is taken according to proportions and is combined together, the obtained mixture is put into an agitator and is agitated for 150 minutes, the obtained product is taken out and is put into a dryer, the temperature of the dryer is controlled to be within 50-60 DEG C, the drying time is controlled to be 120 minutes, the dryness of the dried substance is controlled to be 75-85 percent, the dried substance is taken out, is cooled, is put into the agitator again and is agitated for 60 minutes, the obtained product is taken out, is put into an expander and is expanded, the temperature of the expander is controlled to be within 60-75 DEG C, the expanding time is controlled to be 60 minutes, the dryness of the expanded substance is controlled to be 80-90 percent and the obtained product is taken out, is cooled and is packaged.