Auxiliary heat dissipation device and communication cabinet thereof

The invention relates to the technical field of communication cabinets, in particular to an auxiliary heat dissipation device and a communication cabinet thereof, and the device comprises a housing which is internally provided with a first partition plate; the first partition plate divides the interior of the shell into an air supply area and an air draft area. Air ports are formed in two ends of the shell; the air supply area and the air draft area are both communicated with the air port; the heat dissipation assembly comprises a first fan for blowing air into the air supply area and a second fan for exhausting air out of the air draft area; the first fan and the second fan are both arranged on the shell, the first fan is located in the air supply area, and the second fan is located in the air draft area. Through the first fan and the second fan, the flowing speed of air is increased, so that cold air of a machine room quickly enters the communication cabinet, the cold air is dragged and guided by the second