Building construction drilling device

The invention relates to the technical field of drilling equipment, in particular to a building construction drilling device which comprises a workbench, universal wheels are fixedly installed at the four corners of the lower end of the workbench, a center groove is formed in the center of the upper end of the workbench, first inserting grooves are symmetrically formed in the upper end of the workbench, and glass plates are slidably installed in the two first inserting grooves. The water injection mechanism comprises a water tank, the water tank is fixedly arranged in the center groove, water injection holes are uniformly formed in the lower end of the water tank at equal intervals, a detachable tank cover is clamped to the upper end of the water tank, and a sliding column is slidably installed in each water injection hole, so that when the equipment is used, water can be continuously injected into a drill bit; and the two scrapers preliminarily scrape away stubborn soil and impurities attached to the surface