Heat dissipation system

The embodiment of the utility model discloses a heat dissipation system, and the system comprises a layered cabinet body, and each layer of the layered cabinet body is provided with two rows of heat dissipation units in parallel. The heat dissipation air channel is arranged between the two rows of heat dissipation units and extends in the vertical direction between the top and the bottom of the layered cabinet body; the layered cabinet body is provided with a first air inlet and a second air inlet corresponding to the first side wall and the second side wall of the two rows of heat dissipation units respectively, and the top of the layered cabinet body is provided with an exhaust outlet corresponding to the heat dissipation air duct. According to some embodiments of the utility model, the heat dissipation air channel is arranged between the two rows of heat dissipation units and the air inlets are formed in the corresponding side walls of the two rows of heat dissipation units, so that hot air at the two rows