Welding rod for welding corrosion-resisting steel

The invention discloses a welding rod for welding corrosion-resisting steel. The welding rod comprises a core wire and a coating arranged outside the core wire in a wrapping manner; the coating is an alkaline coating, and the core wire comprises, by mass percentage, 0.06%-0.07% of C, 0.4%-0.6% of Mn, 0.2%-0.35% of Si, not larger than 0.005% of S, not larger than 0.005% of P, 1.2%-1.5%of Ni, 0.2%-0.4% of Cr, 0.08%-0.11% of Mo, 0.15%-0.3% of Cu, 0.02%-0.22% of Ti, 0.02%-0.045% of Sb and the balanced iron. According to the welding technology, the welding rod is excellent, the welding rod is suitable for all-position welding, the strength of extension is larger than 500 MPa, the deposited metal KV2(-40 DEG C) is larger than 90J, the welding rod is better matched with an anti-corrosion steel plate, and the anti-corrosion requirement of the anti-corrosion steel plate is met.