The invention discloses a chicken coop for randomly rearing chickens. The chicken coop comprises a chicken coop body, wherein a partition plate is arranged inside the chicken coop body, the upper portion of the partition plate is a laying room, the lower portion of the partition plate is a collecting room, a through hole communicated with the laying room and the collecting room is formed in the bottom of the partition plate, a water trough is arranged in the collecting room, a guiding pipe is arranged on the water trough, a grain scattering device is arranged on the chicken coop body and comprises a base, a guiding pipe and a supporting rod, the base is fixedly connected with the chicken coop body, the guiding pipe and the supporting rod are fixedly connected with the base, a sliding block is in sliding connection with the guiding pipe, a plurality hoppers are hinged to the sliding block, the side, facing the supporting rod, on the sliding block is provided with a plurality of ratchets, limiting pawls matched with the ratchets are hinged to the supporting rod, a lever is hinged to the supporting rod, a connecting rod is hinged to one end of the lever, a driving pawls matched with the ratchets are arranged on the connecting rod, and a water hopper is arranged at the other end of the lever. The problem that chickens hatch eggs and accordingly a guarantee period of the eggs is shortened is avoided.