The invention discloses a dust-proof catering device for on-site construction of a construction site, relates to the technical field of catering devices on the construction site, and solves the problem that the existing catering device lacks a wind-shielding and dust-shielding device, and workers directly expose themselves to eating in the air in winter or in windy weather. , easy to inhale dust and cold wind, causing physical discomfort. A dust-proof catering device for on-site construction at a construction site, comprising a table plate, the table plate includes a vertical support positioning shaft, a vertical support support and a worm, and the table plate is a rectangular structure as a whole, with its left and right end sections facing each other There are two rectangular cover plates installed in rotation, and two vertical support positioning shafts are symmetrically welded between the table plate and its I-shaped base, and a horizontal support bar is installed on the sliding sleeve of the two vertical support positioning shafts; the table plate A vertical support seat is welded with a vertical support in the middle of the top of the I-shaped base. In the present invention, when the two cover plates are erected and supported, they can play the role of shielding from wind and dust, and provide a better dining environment for workers on the construction site.