The invention provides a welding method of a lead component of a lead-acid storage battery. The welding method of the lead component of the lead-acid storage battery comprises the steps of providing of polar plates, comb plates and a pressing strip, assembling, providing of post heads, butt joint parts and liquid lead, fusion welding, cast welding and the like. By adoption of the welding method ofthe lead component of the lead-acid storage battery, the problems that in the prior art, the lead consumption of a lead-acid storage battery is large, the internal resistance of the battery is large,and consequentially the large current discharging performance is affected are solved.