Setting pyrite typomorphic of Jiudian gold deposit in Shandong Province as the research object，through study on the form，properties，typomorphic characteristics，principal components and trace elements of pyrite，it is regarded that Jiudian gold deposit can be divided into five mineralization stages.Pyrite is not only the transfixion mineral in each mineralization stage，but also topomorphic ineral indicates the gold deposit.Pyrite crystal associated with gold mineralization is mainly octahedral，pentagonal dodecahedron and cube.Unit cell parameters of pyrite are 5.4192~5.4197  .Main chemical components of pyrite in mineralization stage show the characteristics of loss S and rich Fe. Au，Ag，As，Co，Bi，Cu，Pb，Zn and other trace elements have an evident enrichment in the second，the third and the fourth mineralization phases，B，Ni and Sb have no enrichment basically，and Ti shows a loss in the whole process.Through content of Co in pyrite，it is concluded that Jiudian gold deposit belongs to low temperature epithermal deposit.As showed by rare elements，it is indicated light rare earth elements are enriched，particularly La and Ce elements，while high rare earth elements are loss.The enrichment of light rare earth elements is the symbol of rich ores.