The present invention discloses an equipment for reducing odor of livestock. The odor reduction equipment for livestock use according to the present invention is installed in an exhaust port configured with an exhaust fan so that the air inside the house is discharged to the outside through the roof and is intended to deodorize the odor contained in the air discharged through the exhaust port. Odor reduction unit installed on the side to deodorize the air discharged through the exhaust port； A deodorant liquid supply unit supplying a deodorant liquid to the malodor reduction unit； And a control unit controlling the operation of the exhaust fan and the deodorant liquid supply unit based on the deodorization state by the malodor reduction unit and transmitting relevant information to a zookeeper when an abnormality occurs, wherein the malodor reduction unit is smaller than the diameter of the exhaust port. It is formed in a large diameter, the upper portion of the exhaust port is partially accommodated, the body portion is installed so that the space between the outer wall and the inner wall of the upper portion of the exhaust port accommodated in the body portion is formed； It is a tubular member having a certain length, and is disposed in a vertically standing state over the inside of the exhaust port on the upper side of the exhaust fan and the lower side of the body part, and a plurality of mist spray nozzles for spraying deodorant in a mist form along the length direction are formed. Deodorant liquid injection unit consisting of a rotating injection pipe, a rotary blade formed on the rotating injection pipe and a nozzle installation unit coupled to a lower end of the rotating injection pipe so that the rotating injection pipe rotates in a standing position； Including, the deodorant liquid supply unit, one end is connected to the nozzle installation portion deodorant liquid supply pipe to supply the deodorant liquid to the rotary injection pipe； And a deodorant li
