The ventilated floor is similar to the traditional upholstered air conditioning system. The main difference of the ventilated floor is that it is ventilated from the lower space of the floor; different local climatic environments can be formed in the same large space; the indoor airflow is distributed from the floor to the ceiling. Aluminum raised flooring is completely made of aluminum alloy under a negative pressure, which combines the corrosion resistance and high strength of the aluminum alloy. It has the characteristics of high dimensional accuracy, good electrical conductivity, good fire resistance, anti-magnetic, and non-deformation. The performance is extremely stable, but the maintenance cost is large, and the labor intensity during maintenance is large, which is easy to damage the stability of the bottom support system of the floor, and requires professional personnel to operate.