An embodiment of the invention discloses a freshwater snail aquaculture attachment apparatus and relates to the technical field of aquaculture. The freshwater snail aquaculture attachment apparatus comprises bodies and a connecting plate, wherein each body comprises a central pillar and multiple attachment boards, the central pillar is a pillar body arranged vertically, the attachment boards are vertically arranged, one end of each attachment board is fixed on the central pillar, the attachment boards are arranged in the normal direction of the central pillar, a plurality of attachment boardsare uniformly distributed in the circumference direction of the central pillar, and a lift ring is arranged at the top of the central pillar; two bodies are arranged, the connecting plate is located between the two bodies, and two ends of the connecting plate are connected with any two attachment boards of different bodies separately. By means of the freshwater snail aquaculture attachment apparatus provided by the embodiment, the aquaculture density can be increased and can be conveniently adjusted, the freshwater snail aquaculture attachment apparatus can shade the sun, and the yield and thesnail harvesting efficiency can be increased on the whole.