The utility model discloses a portable outdoor rainproof distribution box, including base, box, weather shield, air exhauster and trundle device, the box fixed mounting be in on the base, the left andright sides of box still symmetry is provided with two fly leafs, and the surface of box is hugged closely to the fly leaf, a plurality of bleeder vents have evenly been seted up to the left and right sides of box, the fly leaf open be provided with a plurality of with the corresponding through -hole of bleeder vent, trundle device comprises connecting rod, gyro wheel and baffle, be provided withfirst spout on the connecting rod, the slider passes through expanding spring fixed mounting in the inside of first spout, be provided with on the baffle and supply slider slip second spout. The utility model discloses the fly leaf that can reciprocate in the outer setting of the bleeder vent of block terminal is not influencing the inside radiating while of box, improve the box the rain proofness can, strengthened the protection to box inside components and parts, still set up simultaneously trundle device, convenient box's removal.