Coal conveying trestle cleaning system

The invention discloses a coal conveying trestle cleaning system. The system comprises a coal conveying trestle; the belt conveyor is arranged in the coal conveying trestle, and maintenance channels are arranged on the two sides of the belt conveyor; the number of the water retaining edges is at least two, the water retaining edges are arranged below the belt conveyor and used for separating the maintenance channel from the lower area of the belt conveyor, and a dusty area drainage channel is formed between every two adjacent water retaining edges; and the flushing equipment is arranged below a return rubber belt of the belt conveyor and is used for flushing an area below the belt conveyor. Compared with the prior art that the area below the belt conveyor and the overhaul channel need to be flushed at the same time, less flushing water is needed, so that less waste water is discharged along the drainage channel of the dusty area, large-area water overflowing in a transfer point is avoided, coal cinder can be