Large bury shellfish breeding device and using method thereof

The invention disclose a large bury shellfish breeding device, which comprises a breeding basket and a sandbag, wherein the breeding basket comprises supporting rods I, supporting rods II, a rectangular supporting frame I positioned at the top and a rectangular supporting frame II positioned at the bottom, the width of the supporting frame I and the supporting frame II are equal, and the length ofthe supporting frame I is larger than that of the supporting frame II; the two long sides of the supporting frame I are connected with the supporting frame II through 1-3 supporting rods I, the two long sides of the supporting frame I are connected with the supporting frame II through a plurality of the supporting rods II arranged in parallel, and the top ends of the supporting rods II are arc-shaped; a Mi-shaped supporting frame for supporting the sandbag is fixedly arranged in the supporting frame II, and support legs are mounted at the bottom of the supporting frame II; and the sandbag comprises a gauze with an op