Garbage conveying channel with dust falling function

The utility model relates to the technical field of buildings, in particular to a garbage conveying channel with a dust falling function, which comprises a plurality of channel sections, connecting sections and a top cap, the channel sections are connected through the connecting sections, the top cap is arranged at the top of the uppermost channel section, and the top cap is arranged at the bottom of the uppermost channel section. A garbage inlet is formed in one side face of the channel section at the uppermost end, an inlet cover plate is hinged to the inner wall of the channel section and located above the garbage inlet, and a spraying assembly is arranged in the channel section at the uppermost end and located above the garbage inlet. When the device is used for conveying the construction waste, an external water source communicated with the spraying assembly is opened, the water source enters the water spraying pipe, water is sprayed to the construction waste in the feeding channel through the spraying h