Anti-falling detachable guard bar for engineering construction

The invention relates to the technical field of engineering construction, in particular to an anti-falling detachable guard bar for engineering construction. The anti-falling detachable guard bar comprises vertical columns, a metal net bar and connection pieces, wherein the vertical columns are fixed on the left and right sides of the metal net bar; balance weight plates are fixed at the bottoms of the vertical columns; internal thread holes are uniformly formed in one side surface, which is far away from the metal net, of each vertical column from top to bottom; the connection pieces comprise inserted rods and loop rods; an external thread matched with an internal thread on each internal thread hole is formed in one end of each inserted rod; the ends, which are provided with the external threads, of the inserted rods are screwed into the internal thread holes and fixed; each loop rod is a pipe body of which two ends are provided with holes in the axial directions and the center is provided with a plug; one e