The invention discloses a matched electrode of 800 MPa-grade weathering steel for a bridge and a production method of the matched electrode. The electrode is mainly composed of an H08GX core wire and a coating wrapping the surface of the core wire, and is characterized in that the coating comprises, by weight, 20.0-35.0% of marble, 25.0-40.0% of fluorite, 4.0-9.0% of rutile, 1.8-2.5% of ferromolybdenum, 1.8-2.5% of chromium metal, 3.0-8.0% of silica powder, 2.0-4.0% of silicon iron, 4.0-6.0% of nickel powder, 0.4-0.8% of sodium carbonate, 0.4-0.8% of CMC, 5.2-6.2% of electrolytic manganese, 8.0-11.0% of reduced iron powder, 1.5-3.0% of ferrotitanium and 0.6-1.0% of copper powder. The electrode has the good processing property and the good ductility and toughness. The good effects of improving a welding structure and the mechanical property of weld seams are achieved by reasonably matching all the components of the electrode, and the good welding seam metallicity is achieved.