The invention discloses an aquaculture water circulation treatment device, and belongs to the technical field of water circulation treatment. The aquaculture water circulation treatment device comprises a treatment box, the output end of a motor penetrates through the inner wall of a machine box and the outer wall of the treatment box, extends into the treatment box and is fixedly sleeved with a rocker arm, the other end of the rocker arm is rotationally connected with a rack, the other end of the rack is provided with a float collecting claw, a plurality of wave-shaped rods are uniformly arranged on the circumferential outer wall of a stirring stick, the lower end of the stirring stick is provided with stirring blades, the lower end of a rotating shaft penetrates through the interior of a rotating disc A, extends into a mechanical box and is fixedly sleeved with a bevel gear A, a through groove is formed in the middle of a cross-shaped limiting column, two annular grooves are formed in the inner wall of the circumference of the through groove in an up-down structure, and the structures are in close fit. After agent application, the rocker arm can drive the rack to enable the stirring blades to push and stir water in the device back and forth, and the two layers of stirring blades rotate forwards and backwards through the transmission relation among the bevel gear A, a bevel gear B and a bevel gear C, so that the agent and the water are fully mixed and react, and the reaction efficiency is improved.