Semi-underground breeding system

The utility model relates to a semi-underground breeding system. The semi-underground breeding system comprises a breeding device; chicken cages, a drinking unit, a chicken manure collecting unit, an illumination unit, a heating unit and a ventilation and cooling unit are arranged in the breeding device; and the breeding device is communicated with the outside air through an air inlet channel and an exhaust channel. The semi-underground breeding system can feed the fresh air to the chicken coops through the combination of natural air and forced ventilation and by mounting a UV sterilization and air purification apparatus at the air inlet, thereby lowering the prevention and treatment cost and improving the economic benefits. The air channel is built underground, so that the air can regulate temperature naturally to keep warm in winter and cool in summer. The semi-underground breeding system can save land, and can reduce the distance between the chicken coops after achieving the directional ventilation.