Copper handrail for repairing historic building

The utility model discloses a copper handrail for repairing an ancient building. The copper handrail comprises an embedded base, a cross beam, a display board, a supporting column, a connecting column, a side plate, an inserting plate, a first trapezoidal plate, a triangular plate, a second trapezoidal plate, a first threaded rod, a first U-shaped plate, a second U-shaped plate, a second threaded rod, a stand column and a copper sheet layer. Through the arrangement of a fixing mechanism, when an inserting plate is inserted into an inserting groove in the top of a side plate, a worker manually pushes a large part of a first trapezoidal plate into a through groove in the side wall of the inserting plate, then a first threaded rod is rotated, a second trapezoidal plate sliding upwards extrudes a triangular plate, and the first trapezoidal plate is pushed into the through groove of the inserting plate again; and by rotating a second threaded rod, when the second threaded rod is connected with the cross beam, the