Fixed inner support structure of pre-embedded electric box

The utility model discloses a fixed inner support structure of a pre-embedded electric box, which comprises a distribution box body, an inner support device and wire hole devices, the top wall and the bottom wall of the distribution box body are both provided with the wire hole devices, the front side wall of the distribution box body is hinged with a door sealing device, the left inner side wall and the right inner side wall of the distribution box body are fixedly provided with an equipment frame, and the equipment frame is hinged with a door sealing device. The inner wall of the power distribution box body is connected with an inner supporting device; the inner supporting device comprises a top plate assembly, a fixing base is fixedly installed on the inner wall of the top plate assembly, a limiting groove is formed in an inner cavity of the fixing base, and a limiting plate device is installed in the limiting groove through cooperation of a limiting hole in the side wall of the fixing base and a limiting