The invention discloses a cleaning machine for municipal engineering construction. The cleaning machine comprises a vehicle body, one end of the vehicle body is fixedly provided with a cab, and the two sides of an inner cavity of the vehicle body are fixedly provided with supporting plates; a sliding groove is formed in the upper surface of each supporting plate, the upper sides of the supportingplates are provided with a water storage tank, and one side of the water storage tank is provided with a dedusting box; and the top of the dedusting box is fixedly provided with a dust sucking device,a dust sucking pipe arranged in an air inlet of the dust sucking device extends downwards to the bottom of the vehicle body, and the sliding grooves are slidably connected with the water storage tankand the dedusting box through sliding blocks arranged in the sliding grooves. According to the cleaning machine for municipal engineering construction, one side of the water storage tank is providedwith a fixing frame and an electric pushing rod, so that people only need to fix a water pipe on the fixing frame, and then the top of the electric pushing rod and the water pipe are fixed, a wateringcart can be controlled to water plants accordingly, and the height of the water pipe can be adjusted through the electric pushing rod according to the heights of the plants, controlling is achieved without manual work, and time and effort saving during using is achieved.