Automatic cleaner for cages

The invention discloses an automatic cleaner for cages. According to the automatic cleaner, a transmission belt is arranged on an upper surface of a base bracket; a pre-washing cover, a cleaning cover and a rinsing cover are arranged above the base bracket in sequence; a first upper nozzle and a first lower nozzle are arranged in the pre-washing cover up and down respectively; a second upper nozzle and a second lower nozzle are arranged in the cleaning cover up and down respectively; a third upper nozzle and a third lower nozzle are arranged in the rinsing cover up and down respectively; a pre-washing water tank supplies water to the first upper nozzle and the first lower nozzle; a cleaning water tank supplies water to the second upper nozzle and the second lower nozzle; a rinsing water tank supplies water to the third upper nozzle and the third lower nozzle; an outer cover covers the base bracket, the transmission belt, the pre-washing cover, the cleaning cover and the rinsing cover; two ends of the outer co