The utility model belongs to the aquatic product farming field, concretely relates to float formula fry hatching apparatus, including support, hatching apparatus and agitating unit. The utility model discloses utilize multilayer hatching bucket with separately hatching of roe to the fish egg hatching failure that causes is piled up to the effectual roe of having avoided, has improved the incubation rate, and can utilize the wind energy of nature, drive the rotation of the hydraulic turbine, provide the environment of flowing water, energy saving for the hatching of fry, can provide the environment of nature for the growth of fry, improve the adaptive capacity to environment of fry, the effectual survival rate that improves the fry.