Outdoor primary distribution box

The invention relates to an outdoor primary distribution box, for solving the problems of poor cable installation stability of a conventional outdoor distribution box and the like. The outdoor primary distribution box comprises a housing, an open end and a door body, wherein the door body and/or the housing is provided with a plurality of wiring holes communicating with a cavity, the peripheral outer sides of the wiring holes are provided with base plates through detachable structures, the base plates are provided with through holes, the through holes are provided with cylindrical threading cylinders with threading channels, the end portions of the threading cylinders are hinged with cover plates capable of enclosing the end portions of the threading cylinders, the peripheral inner sides of the threading cylinders are provided with a plurality of annular anti-disengagement rings protruding inwards circumferentially, and each annular anti-disengagement ring is aslant arranged in the same direction to be away from one end of its corresponding wiring hole or close to one end of the corresponding wiring hole. The outdoor primary distribution box has the following advantages: the structure is simple, the stability is good during placement, the sealing performance is good, water leakage or water seepage phenomena at threading positions can be prevented, cables at wiring positions are installed firmly, and slippage is not easily generated.