Abstract: A series of Pb-Sb alloys containing different amounts of antimony was studied by means of metallography, electro-beam microprobe analysis and cyclic voltametry. The tendency of intercrystalline corrosion of antimony rich phase was observed, and the intercrystalline corrosion was suggested to be caused by the dissolution of Pb(Ⅱ)-compound which appears concentrated in the intercrystalline boundary.