The invention discloses an aquatic feed feeding device. The device comprises a sliding rod, a sliding block is arranged on the sliding rod, a rotating plate is arranged on the lower portion of the sliding block, and a motor A is arranged in the sliding block; a material throwing device and an oxygen increasing machine are arranged on the lower portion of the rotating plate, the material throwing device comprises a connecting rod, a barrel A is arranged on the lower portion of the connecting rod, a transverse plate A is arranged on the right side of the connecting rod, a fixed rod is arranged on the lower portion of the transverse plate A, a motor B is arranged on the lower portion of the fixed rod, an auger A is fixed to the motor B, a discharge tube is arranged on the barrel A, a materialstorage box is arranged on the discharge tube, a feed inlet is formed in the material storage box, a transverse plate B is arranged on the discharge tube, a discharge opening is formed in the transverse plate B, a rocker A is arranged on the transverse plate B, a rotating shaft is arranged on the barrel A, a bevel gear B is arranged on the rotating shaft, a bevel gear A is arranged on the motor B, an opening A is formed in the lower portion of the barrel A, an arc-shaped plate is arranged below the opening A, the motor B is arranged on the lower portion of the barrel A, a disc A is arranged on the motor B, a crank A is arranged on the disc A, and a rocker B is arranged on the crank A; the oxygen increasing machine comprises a compressed air bag. Accordingly, feeding is convenient, and thefeeding effect is good.