Automatic cleaning belt, so that chicken manure dry into granulation, chicken manure reuse rate is high. The chicken manure can be directly sent to the cleaning truck outside the poultry house. The chicken manure does not ferment in the poultry house, so that the air inside the house is fresh. Broiler flocks have good health and epidemic prevention effect, which can effectively prevent infectious diseases of chickens: once the epidemic is found, it can be quickly controlled and prevented from spreading, and the chickens do not contact feces, which can make the growth of broiler chickens healthier, provide a clean and comfortable growth environment for broilers, and the time of emergence is also much earlier, and the emergence rate has also been greatly improved.