The invention discloses an electrical cabinet with an excellent radiating function. The electrical cabinet comprises a cabinet body; a dedusting chamber, an installing chamber and a driving chamber are orderly arranged in the cabinet body from top to bottom; a first screw and a second screw are symmetrically and rotatably arranged at the left side and the right side in the installing chamber; eachof the first screw and the second screw is in threaded connection with two groups of sliding blocks, and each group of sliding blocks comprises two sliding blocks; one side of each sliding block is in sliding connection with the inner wall of the cabinet body, and an oscillating plate is rotatably arranged on the other side of each sliding block; and a radiator fan is fixedly arranged on the outside of each oscillating plate. The first screw and the second screw are symmetrically and rotatably arranged in the cabinet body so as to drive the sliding blocks to slide up and down, drive the oscillating plate to oscillate up and down, and drive a plurality of radiator fans to oscillate up and down; the airflow is sufficiently contacted with the electric elements in the cabinet body, so that the radiating effect is excellent; and meanwhile, a filter screen and a water tank are arranged to filter the inlet gas, thereby preventing the dust in the air from damaging the electric elements.