Outdoor electrical switch cabinet

The utility model relates to an outdoor electrical switch cabinet which comprises an outer shell and an inner shell, a rectangular window frame is arranged on the front side of the outer shell, a plurality of shutters rotationally connected with the window frame are arranged on the inner walls of the two sides of the window frame, an equipment chamber and a protection chamber are arranged in the inner shell from top to bottom, an induced draft fan, a transverse heat dissipation barrel and a drying tower are arranged in the protection chamber, and a suction cup is arranged in the inner shell. One end of the air inlet pipe extends into the heat dissipation barrel and is fixedly connected with a heat dissipation pipe through a fixing plate, the other end of the heat dissipation pipe is connected with a cold air pipe through a fixing plate, and a water inlet pipe and a water outlet pipe are arranged at the left end and the right end of the bottom of the heat dissipation barrel respectively. The other end of the c