The invention discloses a rainproof and heat dissipation type outdoor power distribution cabinet and belongs to the electrical equipment technical field. The rainproof and heat dissipation type outdoor power distribution cabinet comprises a cabinet body; a cabinet cavity is arranged in the cabinet body; the top of the cabinet cavity is a dome; two sides of the cabinet cavity are both provided with a water collection device; the top surface of each water collection device is arc-shaped and tilts downwards from the inner side to the outer side in an exponential function manner; a plurality of filtering holes are formed in the water collection device; the filtering holes are communicated with a water collection cavity in the water collection device; a plurality of water pipes are horizontally arranged in the cabinet body; and two ends of any one of the water pipes are communicated with the two water collection cavities respectively. The rainproof and heat dissipation type outdoor power distribution cabinet of the invention is simple in structure, and can prevent rainwater and store the rainwater for heat dissipation.