Communication cabinet dust removal device, communication cabinet and communication cabinet heat dissipation and dust removal method

The invention relates to a communication cabinet dust removal device, a communication cabinet and a communication cabinet heat dissipation and dust removal method. The communication cabinet dust removal device comprises a cabinet body, a dust suction assembly, an air inlet valve and an inner side dustproof net; and an inner cavity of the cabinet body comprises a communication equipment containing cavity and an air inlet cavity which are independent of each other, the inner side dustproof net is arranged between the communication equipment containing cavity and the air inlet cavity, the dust collection assembly and the air inlet valve are arranged in the air inlet cavity, a front air window is arranged on a front cabinet door of the cabinet body, the dust collection assembly is arranged behind the front air window and located at the bottom of the air inlet cavity, the inner side dustproof net is opposite to the dust collection assembly in a spaced mode, and the air inlet valve is arranged behind the front air