The present invention relates to a pigsty for weaning piglets for preventing the external air with a temperature difference from being directly circulated inside the pigsty. According to one embodiment of the present invention, a weaning piglet pigsty for breeding weaning piglets comprises: side walls having a structure with closed sides except for a door without a window; a external air buffering chamber having a closed structure and temporarily stagnating the external air between a roof and the upper panel of the ceiling; an air inlet installed in the upper side of the side walls and entering the external air; an inlet air switching device switching an air flow of the external air entered through the air inlet hole to the inside of the side walls or the external air buffering chamber by a control signal of a control unit depending on a temperature difference of the external air; a ceiling duct sending the air adjusted from the external air buffering chamber to the inside of the weaning piglet pigsty; and a central outlet including a central exhaust fan discharging circulating air inside the pigsty for weaning piglet to the outside of the side walls.
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