Warning mark fixing device for building construction

The utility model discloses a warning sign fixing device for building construction, which comprises sign cloth and a frame, the sign cloth is arranged in the frame, and warning slogans are printed on the sign cloth. The warning sign has the advantages that the adjusting handle is rotated to drive the first winding shaft and the second winding shaft to rotate, so that the using face of the sign cloth is adjusted, warning signs for building construction needing to be displayed can be replaced conveniently, different warning signs can be adjusted according to using requirements, the practicability of the warning sign is improved conveniently, and the practicability of the warning sign is improved. And fixing screws penetrate through the corresponding penetrating holes to be inserted into threaded holes formed in the rear wall of the frame, so that the fixing screws are screwed on the frame, the position of the adjusting handle is fixed, the positions of the first winding shaft and the second winding shaft are fi