The invention discloses a power distribution cabinet which includes a power distribution cabinet body. A cooling device, a heating device and a temperature sensor are arranged inside the power distribution cabinet body. The heating device is arranged on one side of the cooling device. The cooling device and the heating device are electrically connected with the temperature sensor. The cooling device includes a cooling fan and a plurality of cooling fins. The cooling fins are arranged on one side of the cooling fan, and the cooling fins are distributed in a rectangular array on one side of the cooling fan. The heating device includes a hollow shell which is equipped with a plurality of heating rods inside. The heating rods are arranged in the shell equidistantly. A heat collector cover disposed in the shell is arranged on one side of the heating rods. A heat conduction pipe is arranged on one side of the heat collector cover away from the heating rods. The power distribution cabinet is reasonable in design, efficient and practical. The problem that the power distribution cabinet cannot run normally due to the influence of outdoor high or low temperature is avoided. Outdoor normal work of the power distribution cabinet is ensured.