Fresh air preheating device for pig house in winter in cold region

The utility model belongs to the technical field of animal husbandry, and particularly relates to a winter pig house fresh air preheating device in a cold region, which comprises a ceiling and a gas collection component arranged on the surface of the ceiling, and the gas collection component comprises a gas collection drying device, a gas inlet pipe, a heating bin and a biogas pipe. One side of the gas collecting and drying device is fixedly connected with the cylindrical gas inlet pipe, the other end of the gas inlet pipe penetrates through the surface of the ceiling and is fixedly connected with one side of the surface of the heating bin, and the surface of one side of the heating bin is fixedly connected with one end of the biogas pipe; according to the device, through auxiliary work of the air collecting assembly and the heating assembly, heat of external cold air can be effectively transferred, air in the ceiling is fully heated, the heat of the air in all positions in the ceiling is sufficiently uniform