Isolation structure for combined treatment of bullfrog pond with white net. A novel cage culture device for bullfrog breeding comprises a box body, wherein a supporting mechanism is arranged in the inner cavity of the box body; an isolation mechanism is arranged at the top of the supporting mechanism at equal intervals; a receiving mechanism is arranged between the bottom of the supporting mechanism and the box body; a blocking net is arranged at the top of the box body; a fixing mechanism is connected between two ends of the blocking net and the box body; and the left and right sides of the box body are symmetrically provided with first through holes and a plurality of first through hole arrays.