Distribution box with multi-layer mounting bracket

The utility model discloses a distribution box with multiple layers of mounting brackets. The distribution box comprises a distribution box main body, a plurality of layers of mounting brackets are arranged in the distribution box main body from top to bottom, each layer of mounting bracket comprises two positioning plates fixed in the distribution box main body through bolts, sliding grooves are formed in the positioning plates in the length direction of the positioning plates, and an insertion cavity is formed between the two sliding grooves; an inserting cavity is formed in the positioning plate, a horizontally-pulled mounting bottom plate is inserted into the inserting cavity, an anti-disengaging mechanism for preventing the mounting bottom plate from disengaging is arranged on the positioning plate, the anti-disengaging mechanism comprises a limiting transverse rod arranged on the mounting bottom plate, and a vertically-upward limiting vertical rod for limiting the limiting transverse rod is arranged on