Building construction warning device

The utility model discloses a warning device for building construction, which relates to the technical field of building construction and comprises a base, a fixing column is fixedly mounted at the top of the base, a lifting cavity is formed in the fixing column, a limiting plate is movably clamped in the fixing column, and a lifting column is fixedly mounted at the top of the limiting plate. The building construction warning device has the advantages that the vertical bevel gear can rotate by rotating the rotary knob so as to drive the transverse bevel gear and the lead screw to rotate, and due to the fact that the limiting plate is connected to the outer wall of the lead screw in a threaded and sleeved mode, when the lead screw rotates, the limiting plate can ascend or descend along with rotation of the lead screw; the height of the building construction warning device is adjusted by adjusting the height of the building construction warning device, so that the building construction warning device can fully