Bait breeding method

The invention discloses a bait breeding method. The bait breeding method comprises the following steps that zooplanktons are collected, the zooplanktons are placed in an aquatic seedling bag, positive zooplanktons are killed and eliminated, and negative zooplanktons are taken as bait biological parents without specific pathogens; sand-filtered disinfected seawater is injected into an outdoor cement pond, the bait biological parents without the specific pathogens are added, zooplankter adults and pond bottom bath mud containing dormant insects and dormant eggs are harvested, and batches of the zooplankters are obtained; detecting is conducted, the negative zooplanktons are reserved as large-scale production parents, and the positive zooplanktons are eliminated after sterilizing; the sand-filtered disinfected seawater is injected into the pond, a fertilizer is added according to a microalgae culture formula, chlorella without specific pathogens is inoculated, and bait organism adults without the specific pathog