Dedusting and cleaning device for building construction

The utility model discloses a dedusting and cleaning device for building construction, and relates to the technical field of dedusting equipment. The dust collection device comprises a trolley, a sweeping mechanism used for sweeping dust on the construction site is arranged on the surface of the trolley, and dust collection mechanisms used for collecting the dust are arranged on the surface of the trolley and the surface of the sweeping mechanism. Flying dust is sucked through the dust suction mechanism, after the ground of the construction site is cleaned, water in the water tank is pressurized and sprayed out through the flushing mechanism, the sprayed water cleans the ground of the construction site, suction force is generated in the sewage tank, the sewage suction pipe and the sewage suction cover through the negative pressure pump, and the ground of the construction site is cleaned. Sewage enters the sewage tank through the sewage suction cover and the sewage suction pipe under the suction action of the