Machine cabinet and ventilating method therefor

The invention provides a machine cabinet and a ventilating method therefor. The machine cabinet comprises a front door and a back surface door, an air-inlet fan group arranged on the front door, and an air-outlet fan group arranged on the back surface door, wherein the air-inlet fan group and the air-outlet fan group are arranged in opposite. By adoption of the machine cabinet, the front and back straight-through fan groups are arranged on the front door and the back surface door, so that a ventilation dead corner existing in the common front-back ventilating mode can be avoided; and in addition, the spacing between the front and back fan groups is far less than that of the fans in an upper and down ventilating mode, so that the air duct can be effectively utilized, the cross section of the air duct can be enlarged, the problem of bad radiating effect of the machine cabinet in the related technology can be solved, and a good radiating effect is achieved consequently. 本发明提供了种机柜及其通风方法，其中该机柜包括：正门和背面门，进风扇组，设置在正门上