Electric control cabinet with circulating ventilation cooling function

An electric control cabinet with a circulating ventilation cooling function comprises a cabinet body, a cabinet door is arranged on one side of the cabinet body, a cabinet body cavity is formed in the cabinet body, a side panel opposite to the cabinet door forms a cabinet body back plate, a heat dissipation module is arranged in the cabinet body cavity, a base is arranged at the bottom of the cabinet body, and a top cover is arranged at the top of the cabinet body. An air supply outlet is formed in a top panel of the base; the plurality of blowing fans are positioned and mounted below the air supply outlet and can convey cold air into the cabinet body cavity through the air supply outlet; an air draft device is mounted in the top cover; the heat dissipation module comprises an outer shell, a control unit arranged in the outer shell and cooling fins, the outer shell comprises a shell side panel, a shell bottom panel and a shell top panel, a shell air inlet is formed in the end, close to the cabinet body back p