The invention discloses a heat-dissipating power cabinet with a targeted directional cooling function, which comprises a cabinet body, a plurality of cooling holes are opened on the outside of the cabinet body, a motor base is fixedly connected to the left side of the inside of the cabinet body, and the motor base is fixed on the top of the cabinet body. A motor is connected, and the bottom of the cabinet is fixedly connected with a bearing seat, and a rotating shaft is rotatably connected above the bearing seat, and the rotating shaft is connected with the motor. There is a transmission ring, the lower side of the transmission ring is fixedly connected with a first connecting rod, the lower side of the first connecting rod is rotationally and fixedly connected with a second connecting rod, and the center of the inside of the cabinet is fixedly connected with an inflating air bag. Compared with the prior art, the beneficial effect of the present invention is: the present invention is simple in structure, easy to use, can effectively dissipate heat to the power cabinet when the power cabinet is working, and the targeted heat dissipation makes the heat dissipation effect better, thus avoiding the power cabinet from being damaged by the temperature. It is worth promoting if the service life is shortened if it is too high.