To provide a structure with an anti-heat countermeasure for a cabinet 1, capable of efficiently discharging heat without using special equipment.

The structure with the anti-heat countermeasure for the cabinet 1 includes ventilation ports 3, 2 respectively in the upper and lower sides part of the cabinet 1. The inner part of the cabinet 1 is vertically partitioned with the use of a separator 4, where a heat generating apparatus 6 incorporating a radiation fan 5 is arranged in the upper part of the separator and an apparatus with the smaller amount of heat generation is arranged in the lower part of the separator 4. Cool air taken in from the lower ventilation ports 2 passes through an opening arranged in the separator 4, is taken into the heat generation apparatus 6, is discharged from the heat generation apparatus 6 by the radiation fan 5 so as to go up, and is discharged from the upper ventilation ports 3.