The utility model belongs to the technical field of beasts and birds are bred, especially, relate to a pig house environmental control system, including the pig house, set up supply air duct in the pig house, set up buried excrement ditch in the pig house, the waste gas collection pipeline is connected with the excrement ditch, the heating ventilation house main part of being connected through supply air duct and waste gas collection pipeline and pig house, heating ventilation house main part includes preceding wallboard, back wallboard, left wallboard, right wallboard, back wallboard right-hand member is equipped with the wind gap, be equipped with early effect filters on the wallboard of a left side, early effect filters the right is equipped with the medium effeciency filter, the medium effeciency filter right side is equipped with bellows heat exchange system, bellows heat exchange system right side is equipped with temperature control system, bellows heat exchange system is connected with waste gas collection pipeline, be equipped with out the rheumatism curtain on the bellows heat exchange system baffle in front, , the utility model discloses effectively having reduced harmful gas's in the pig house concentration, having strengthened pig house heating in winter simultaneously and ventilated, the cooling was ventilated summer effect has improved the environmental quality of pig house