Waterproof power distribution cabinet convenient for heat dissipation

The invention discloses a waterproof power distribution cabinet convenient for heat dissipation, and belongs to the technical field of power distribution cabinets. The waterproof power distribution cabinet comprises a base, two parallel heat dissipation side plates fixed on the base, a front plate and a back plate, wherein the front plate and the back plate are arranged on the base; a top cover is arranged on the tops of the heat dissipation side plates, the front plate and the back plate in a matched mode. Each heat dissipation side plate comprises a rectangular plate body, a plurality of rectangular open holes are formed in the rectangular plate body in the length direction of the rectangular plate body at equal intervals, the upper side wall and the lower side wall of each rectangular open hole are both arc-shaped faces, and each rectangular open hole is rotationally provided with a rotating column in a matched mode; and a plurality of heat dissipation through holes are formed in each rotating column in th