The utility model discloses a novel put cabinet in dustproof heat dissipation belongs to the high -voltage distribution equipment field. Including the front and back highly uniform cabinet body, the internal portion of cabinet be equipped with intermediate bottom, intermediate bottom one side is equipped with instrument room, circuit breaker room, cable chamber, the indoor handcart that is equipped with of circuit breaker, opposite side are equipped with bus -bar room, earthing switch, earthing switch fixes on intermediate bottom, cabinet body top is equipped with the scattered heat exchanger in top, is equipped with the screen window on the scattered heat exchanger in top, the top that heat exchanger is loose on the top is equipped with the dust catcher, cabinet side limit is equipped with scattered heat exchanger of side and gauze element layer. The utility model discloses a radiating effect is good, efficient, can effectually prevent that dust, worm fly access switch cabinet are internal, and regularly the inside dust suction and dust removal of cabinet is put to the centering moreover to avoided the dust in to the cubical switchboard electrical equipment lead to the fact the unnecessary loss.