To provide a pollutant suction device capable of simply and efficiently conduct suction and exclusion of the pollutant while reducing loss of heat energy in air conditioning facilities to the utmost without covering a pollutant generating source with a cover such as a panel.

In a pollutant suction device 1, a suction hood 6 and a discharge nozzle 10 are disposed to face each other close to a pollutant generating part. The suction hood 6 is connected to a tip of a suction duct 5 connected to an air suction source 2 to be capable of sucking air A5. The discharge nozzle 10 is connected to an air pressure generating source 8 to discharge air A0.