In the present paper,different corrosions of three pieces of Chinese ancient lead glazed potteries from different burial circumstances were analyzed by using XRD,FTIR,EDXRF,RS etc,and the analyses indicate that the main crystalline phase of corrosion of HYT is cerussite (PbCO3),that of SYT is calcium-lead hydroxyapatite [Pb10-ｘCaｘ(PO4)(OH)2(ｘ<2.7)] and the yellow area of the erosion is attributed to a certain mount of iron oxide,that of TSC is the cerussite (PbCO3) and calcium-lead hydroxyapatite [Pb10-ｘCaｘ(PO4)(OH)2(ｘ<2.7)],and the brown-black area of the erosion product is the result of the existence of little mount of iron and carbon black.