The invention discloses a farm chicken manure clearing device which comprises a housing. The housing is a semi-circular-ring column, a manure shoveling port is formed in one side face of the housing, a manure collection opening is formed in the middle of the housing, and a left baffle and a right baffle are arranged on two end faces of the housing respectively. First round holes, second round holes and square holes are formed in the left baffle and the right baffle in a paired mode, first bearings are installed in the first round holes, rotary shafts are installed in the first bearings, and multiple manure moving rotation wheels are uniformly arranged on the rotary shafts. Second bearings are installed in the second round holes, and driving screws are installed in the second bearings. Cross beams are installed in the square holes, multiple round holes are uniformly arranged on the cross beams, third bearings are installed in the round holes, rotating heads are installed in the third bearings, blades are arranged at the lower portions of the rotating heads, screwing nuts are arranged at the upper portions of the screwing heads, and the screwing nuts are in threaded connection with the driving screws. The farm chicken manure clearing device is simple in structure and good in applicability, time and labor are saved, and chicken manure can be thoroughly cleared on the premise of safety and reliability.