Installation construction auxiliary device for river channel and bridge landscape lighting

The installation construction auxiliary device comprises an inverted hanging assembly, a standing assembly and a supporting assembly, the inverted hanging assembly comprises a first frame, a second frame and a third frame, the standing assembly comprises a fourth frame and a fifth frame, and the third frame is movably connected with the fourth frame; the supporting assembly comprises an abutting rod, two second sleeves and two second inserting rods, and the two second inserting rods are movably connected with the two second sleeves correspondingly. The installation construction auxiliary device can be rapidly and stably hung on a river channel guardrail or a bridge guardrail, so that a stable construction platform is provided for a worker for installing landscape lighting, the worker can freely move and install within the installation requirement range, and the installation efficiency is improved. And the height of the device can be adjusted according to the actual working condition of a river channel or a br