Ventilation device applicable to SPF-grade experimental animal raising equipment

The invention discloses a ventilation device applicable to SPF-grade experimental animal raising equipment. The ventilation device comprises a ventilation panel, a plurality of ventilation ports and an air volume adjusting plate, wherein the ventilation ports are formed in the ventilation panel; the air volume adjusting plate is rotatably arranged on the ventilation panel through a rotating shaftand provided with openings corresponding to the ventilation ports one by one, and ventilation passages for passing of air flow are formed when the openings and the ventilation ports are partially overlapped with each other. The micro-barrier-environment experimental animal raising equipment comprises the ventilation device. According to the ventilation device applicable to the SPF-grade experimental animal raising equipment, by rotating the air volume adjusting plate to make the openings and the ventilation ports partially overlapped with each other, the ventilation passages for passing of airflow are formed, the size