Equipment cabinet heat-dissipating structure

The invention relates to an equipment cabinet heat-dissipating structure. The equipment cabinet heat-dissipating structure comprises a cabinet body internally provided with a main heating element, thecabinet body is provided with an air inlet, an air outlet and a heat-dissipating fan, the side walls of the cabinet body are made of heat conducting materials, the cabinet body is internally providedwith an air flow circulating channel surrounding the main heating element and passing through the upper part and the lower part of the main heating element, and the air flow circulating channel is internally provided with a circulating fan used for achieving air flow circulating in the cabinet body. The circulating fan drives air in the cabinet body to cyclically flow around the main heating element to absorb heat of the main heating element, the heat-dissipating fan drives low-temperature air to be subjected to heat exchange with the main heating element and exhausts high-temperature air, the high-temperature air whi